How to Write an Annotated Bibliography in Chicago Style

An annotated bibliography is written a little differently than a standard bibliography. Instead of only listing the sources used for a report, essay, research finding or article, the annotated bibliography also lists a summary of each source and how it was used to complete the work. Annotated bibliographies can be written in any style, including APA (American Psychological Association, MLA (Modern Language Association) and Chicago style, and are often used to support a research paper or report or to credit sources used to support a claim or argument.

Make a list of all the references you used and plan to include in your bibliography.

Alphabetize the list you created using the last name of the first author or editor credited on the source.

Format each source in Chicago style: the last name of the first author or editor credited followed by his or her first name; other authors or editors credited listed with their first names and then last names; the date the source was published; the title of the work; the title of the periodical, journal or other source; the volume, issue number and number of pages; the URL where the source can be found; the source it was found through; and the date you accessed it online. A sample source in Chicago style should be in the following format: Smith, Rob and Tim Johnson. May 2008. Negative Effects of Genetically Modified Food. American Journal of Food Technology. Volume 8, No. 3: 12 pages. http://www.americanjournaloffoodtechnology/negativeeffectsofgmos/2008/issue12.html Retrieved through Academic Search Premier, Ohio State University Libraries. Accessed on 12 February, 2009.

Indent every line after the first line of each source approximately half an inch.

Skip one space after each source. Write a brief summary approximately five lines long. Include information that was relevant to your purpose for using the source, and include the overall purpose or conclusion of each source as stated by the authors or editors.