Difference Between Bibliography And Sources Of Water

ACS Style Guide

Developed by the American Chemical Society, this style may be used for research papers in the field of chemistry.

This guide provides examples of the most commonly cited types of sources used by Williams College students. For additional examples and explanations, see The ACS Style Guide or the print manual at Schow Reference QD8.5 .A25 2006.


Each citation consists of two parts: the in-text citation, which provides brief identifying information within the text, and the reference list, a list of sources that provides full bibliographic information.

How to Format:In-Text Citations | Reference Lists

How to Format In-Text Citations

(For more detailed information see ACS Style Guide, pp 287-290.)

Select one of the three methods below to cite in-text references:

Superscript numbers

At the end of the cited information:
Fluoridated water as well as various fluoride products such as toothpaste provide fluoride ions necessary for remineralization.¹

Within the cited information:
Rakita¹ states that fluoridated water as well as various fluoride products such as toothpaste provide fluoride ions necessary for remineralization.

Italic numbers

At the end of the cited information:
Fluoridated water as well as various fluoride products such as toothpaste provide fluoride ions necessary for remineralization (1).

Within the cited information:
Rakita (1) states that fluoridated water as well as various fluoride products such as toothpaste provide fluoride ions necessary for remineralization.

Author name and year of publication

At the end of the cited information:
Fluoridated water as well as various fluoride products such as toothpaste provide fluoride ions necessary for remineralization (Rakita, 2004).

Within the cited information:
Rakita states that fluoridated water as well as various fluoride products such as toothpaste provide fluoride ions necessary for remineralization (2004).

Note: for two authors use "and": Rakita and Smith. For more than two authors use "et al.": Rakita et al.

How to Format Reference Lists

Books | Articles | Theses, Patents, Conferences | Web/Online


(ACS Style Guide, pp 300-305)

Single author

Chang, R. General Chemistry: The Essential Concepts, 3rd ed.; McGraw-Hill: Boston, 2003.

Edited Book

Gbalint-Kurti, G. G. Wavepacket Theory of Photodissociation and Reactive Scattering. In Advances in Chemical Physics; Rice, S. A., Ed.; Wiley: New York, 2004; Vol. 128; p 257.

Book in Series

Goh, S. L. Polymer Chemistry in an Undergraduate Curriculum. In Introduction of Macromolecular Science/Polymeric Materials into the Foundational Course in Organic Chemistry; ACS Symposium Series 1151; American Chemical Society: Washington, DC, 2013; pp 113-127.

Article from a reference book

Powder Metallurgy. Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed.; Wiley: New York, 1982; Vol. 19, pp 28-62.


(ACS Style Guide, pp. 291-299 and pp. 317-319 for online articles )

Article in a scientific journal

Evans, D. A.; Fitch, D. M.; Smith, T. E.; Cee, V. J. Application of Complex Aldol Reactions to the Total Synthesis of Phorboxazole B. J. Am. Chem. Soc.2000,122, 10033-10046.

Article in a popular/non-scientific magazine

Manning, R. Super Organics. Wired, May 2004, pp 176-181.

Article from an online journal

Peacock-Lopez, E. Exact Solutions of the Quantum Double Square-Well Potential. Chem. Ed. [Online] 2007,11, 383-393 http://chemeducator.org/bibs/0011006/11060380lb.htm (accessed Aug 23, 2007).

Theses, Patents, Conferences, Technical Reports

(ACS Style Guide, pp 307-316)


Thoman, J. W., Jr. Studies of Molecular Deactivation: Surface-Active Free Radicals and S(O)para-difluorobenzene. Ph.D. Dissertation, Massachusetts Institute of Technology, Cambridge, MA, 1987.


Gehring, A. PhD. Dissertation, Harvard University, 1998.


Diamond, G.; Murphy, V.; Leclerc, M.; Goh, C.; Hall, K.; LaPointe, A. M.; Boussie, T.; Lund, C. Coordination catalysts. US 20020002257 A1, January 3, 2002.

Conference/Meetings (full-text)

Winstein, S. In University Chemical Education, Proceedings of the International Symposium on University Chemical Education, Frascati (Rome), Italy, October 16-19, 1969; Chisman, D. G.. Ed.; Butterworths: London, 1970.

Conference/Meetings (abstract only)

Kaplan, L.J.; Selder, A. Books of Abstracts, 213th ACS National Meeting, San Francisco, CA, April 13-17, 1997; American Chemical Society: Washington, DC, 1997; CHED-824.

Technical Report or Bulletin

Crampton, S.B.; McAllaster, D. R. Collision and Motional Averaging Effects in Cryogenic Atomic Hydrogen Masers; WMC-AFOSR-002; NTIS: Springfield, VA, 1983.


(ACS Style Guide, pp 316-325)

Note: Different web browsers break the text in different places of a URL. In a printed work, if the URL needs to be broken at the end of a line, the break should be made after a colon or a double slash; before a single slash, a tilde, a period, a comma, a hyphen, an underline, a question mark, a number sign, or a percent symbol; or before or after an equals sign or an ampersand. (CMS 14.2)

Web page

National Library of Medicine. Environmental Health and Toxicology: Specialized Information Services. http://sis.nlm.nih.gov/enviro.html (accessed Aug 23, 2004).

Article from an online journal

Peacock-Lopez, E. Exact Solutions of the Quantum Double Square-Well Potential. Chem. Ed. [Online] 2007,11, 383-393 http://chemeducator.org/bibs/0011006/11060380lb.htm (accessed Aug 23, 2007).

Article from full text database

Begley, S. When Does Your Brain Stop Making New Neurons? Newsweek [Online] July 2, 2007, p 62. Expanded Academic Index. http:/galegroup.com (accessed Aug 23, 2007).

Article published online in advance

Chung, J.M. and Peacock-Lopez, E. Cross-diffusion in the Templator model of chemical self-replication. Phys. Lett. A [Online early access]. DOI:10.1016/j.physleta.2007.04.114. Published Online: June 12, 2007. http://www.sciencedirect.com (accessed Aug 23, 2007).

Computer Program

SciFinder Scholar, version 2007; Chemical Abstracts Service: Columbus, OH, 2007; RN 58-08-2 (accessed Aug 23, 2007).

The Chicago Manual of Style is the style most commonly used by professional historians when they write and publish their work. Currently, the NHD Contest Rule Book allow citations in Chicago or MLA Style, but this resource focuses on Chicago Style.

As you complete your research, you should sort your research into primary and secondary sources. For complete definitions of primary and secondary sources, as well a complete set of the Contest Rules, go to www.nhd.org/rules.

Building Your Annotated Bibliography

You should build your bibliography as you conduct your research. Simply put, if you wait until the end of your project, this task will be messy, confusing, and complicated. It is easy to forget sources, mix up one source with another, and make simple mistakes. Let us start by citing a simple source together.

When you start citing, you have two options available. Option one is to create a bibliography on your own. Option two is to use NoodleTools, a web-based program that will help you create a polished, accurate annotated bibliography and also keep track in note cards of the quotes and paraphrases and where you found them in your sources. Since it is saved on a server, you do not have to worry about a water bottle exploding in your backpack and your notes getting soaked—the materials are always there when you log into the computer or via your tablet.

Let’s say that I am researching the Panama Canal, and I found Edmund Morris’ book about President Theodore Roosevelt called Theodore Rex. While I will skim the book to get a sense of the author's purpose and argument, I want to use the Table of Contents or Index to focus in on the section that relates to my research. Using the index, I can jump to the section of the book where President Roosevelt is approached by Philippe Bunau-Varilla about a plan to get control of the canal that a French company began digging.

To cite a book, I need five key elements:

  • The name(s) of the author(s)
  • The complete title of the book
  • The city where it was published
  • The name of the company or university that published the book
  • The most recent copyright date of the book.

If I am doing this on my own, I would list it like this:

Morris, Edmund. Theodore Rex. New York: Random House, 2001.

Citing Sources in NHD Historical Papers

When writing an NHD paper, you have two options on how to cite your sources. This section will address creating footnotes. Please note that it is also appropriate to use the parenthetical references described in the website section as well. Either is appropriate, but choose one way and be consistent with that method.

Most historians use footnotes when they write a paper, article, or book. Footnotes allow you to keep track of your sources without interrupting the flow of the paper. If my paper about Theodore Roosevelt and his foreign policy regarding Germany contains the text:

Roosevelt “has seen the crisis coming for eleven months.”[1] He feared that Germany might invade Venezuela if they did not pay off their debts.

Tip: Allow your word processor to insert the footnote for you. It will do it automatically, and if you insert one into the middle of the paper, it will automatically renumber it for you. You can find the “insert footnote” button in the reference section of the menu. If you need step-by-step directions, just go to the help menu and type in “insert footnotes.”

The FIRST time that I use this source (in this case it is a book) in a footnote, my full footnote would look like this (see footnote number one below). The footnote tells us the author, the title of the book, the basic publishing information, as well as the page (or range of pages) where my quote can be found. It is similar to your citation in your bibliography, but not exactly the same.

If you use this source again later in your paper, it is much easier. Assume that later in my paper I write the sentence:

Roosevelt knew that he had to take a strong stand and argued for “crude force” to keep the Germans out of Latin America.[2]

As you can see in footnote 2 below, I just need to include a shortened footnote with the author’s last name, the title of the book, and the page number or page range where I found my information.

See the next page for examples of how to footnote the most common types of sources that you will use in your NHD paper. NoodleTools will provide you with a full and shortened footnote for each source.

[1] Edmund Morris, Theodore Rex (New York: Modern Library, 2001), 177.

[2] Morris, Theodore Rex, 178.

But what if I put it in my own words…do I have to cite it then? YES.

Paraphrasing is when you use your own words to convey someone else’s ideas.

Let’s use the Lusitania article as an example. It is perfectly appropriate to write in your paper that:
The Lusitania was hit by a German submarine at 2:33 pm, and the news of the sinking was published around the world. A fishing fleet was called to help rescue as many passengers as possible in the North Atlantic.[3]

Block Quotes

If you have a quote that is more than two lines across the page, then it should be converted to a block quote. Please note that this kind of quote should be used very infrequently, but it can be effective. A block quote should look like this:

The Constitution of the United States defined the weakness of the Articles of Confederation in the one-sentence preamble,

We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America.[4]

This sentence, memorized by many…

Block quotes are single-spaced, tabbed on one half inch from the left side of the page, and do not need quotation marks around them. They should always have a footnote at the end attributing the source. After the quote, continue typing using double-spacing.

Do I have to cite every sentence of my paper?

No, please don’t. Often you find that a series of sentences (or even an entire paragraph) is based on content from a single source. When that happens, signal to your reader that the following information came from a certain source and then cite it once at the end of the last sentence. Also note that your thesis statement and your arguments should be your original work, and should not be credited to another author.

What if all of the information, quotes and paraphrases, in one paragraph, comes from one source? How do I cite that?

Just cite once, at the end of the paragraph.

[3] “Liner Lusitania Sunk by German Submarine Fleet Rushes to Aid,” Washington Times, May 7, 1915.

[4] Constitution of the United States of America.

Citing Sources in Exhibits and Websites

When you cite in exhibits or websites, you do need to credit your sources, and brief citations do NOT count toward your word count. You just add the minimal amount of information that would allow the viewer to find the source in your annotated bibliography.

Print sources should be cited with the author, the title, and a date (when available.) An example would be:

“There is danger…they have still far to go. It is for the Woman’s Party to decide whether there is any way in which it can serve in the struggle which lies ahead to remove the remaining forms of woman’s subordination” (Alice Paul, The Suffragist, 1921)

If I chose to use this quote, then I would expect to find a citation that would show where this text came from (I might have found it in a book, on a website, or in an article) and where I might go if I wanted the full text of what Alice Paul had to say in 1921.

Visual Sources (photographs, art, maps, charts, graphs, etc.) are cited in a similar manner. You want to mention the content (who/what is in the picture), give a date if available, and where YOU found the image. Please note that Google and other search engines are NOT viable sources. Saying that you got your picture from Google is like saying that you got your quote from a library. Just like you need to tell us which book your quote came from in the library, you also need to tell us which website made this image available to you.

Citing Sources in Performances

When you are creating a performance or a documentary, you do not need to actively cite sources during your presentation, because it would disrupt the flow of your product.

There are times when you would want to make a reference to a source, especially when you are referencing primary source material. It would be relevant to mention in a performance, “I wrote a letter to King George demanding that my grievances be addressed….” A judge would then expect to find a letter or a series of letters that you found in your research and cited in your bibliography. There is no need to stop to verbally cite sources—if the judges have any questions, they can address that in the Q&A segment at the end of your performance.

Citing Sources in Documentaries

You are NOT required to cite images as they appear on the screen. You may add tags to the bottom of the screen to help an image or video clip make sense. For example, you might want to add a name of a speaker, or a relevant historical date during a particular video clip or still image.

At the end of the documentary, you should include a list of relevant audio and visual sources that you included in your documentary. This is not a repeat of your bibliography. Just name the major locations of your images. A typical list might include images from the British Museum, the Smithsonian Institution, the National Archives, the Library of Congress, NBC News, or the Holocaust Museum. Again, if the judges have a question about a particular visual or audio selection, they can address that in the Q&A segment at the end of your documentary.

Alice Paul, 1918, Library of Congress
*This citation is REQUIRED and does NOT count toward the word limit.
Alice Paul was responsible for the campaign for women’s’ suffrage and the introduction of the Equal Rights Amendment.
*This citation DOES count toward the word limit because it shows analysis and interpretation.

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