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It is important to know how to cite primary sources and where to go to find that information. We’ll give you some of the basics of Chicago style and MLA styles below, but for further instructions you should check websites like Purdue’s Online Writing Lab, the guide at University of Wisconsin-Milwaukee, Wesleyan University, University of Arkansas, or published citation guides like The Chicago Manual of Style or MLA Handbook for Writers of Research Papers.
The purpose of a citation is to lead your readers to original sources; the citation needs to have enough information so that the information can be found again easily. Specific information will depend on the source, but you will generally need to include an author, title or identifier, date, collection, box and folder number, and repository.It’s better to include too much information than not enough.
Examples adapted from the Library of Congress’ Citing Primary Sources page:
Chicago Citation Format (Chicago Manual of Style, 15th ed., sections 17.270, 17.222-33)
Structure:
Last name, First name Middle initial. Title of Work. Format. City: Publishing Company, copyright date. Source,Collection.
Example: “Fighting Police Abuse: Coalition Plans Citizen Hearings and Organizing Workshops.” Press release. 1992. Universityof Illinois at Chicago Special Collections, Citizens Alert records, Box 22, Folder 377.
MLA Citation Format (MLA Handbook, 7th ed., sections 5.7.12 and 5.6.2d).
Structure:
Last name, First name. “Title.” Date. Form of the material. Institution, city. Title of the Web site. Day Month Year ofaccess. <opt. URL>.
Example: “Fighting Police Abuse: Coalition Plans Citizen Hearings and Organizing Workshops.” 1992. TS. Citizens Alert records, Box 22, Folder 377, University of Illinois at Chicago Special Collections, Chicago, IL.
Chicago Citation Format (Chicago Manual of Style, 15th ed., sections 17.270, 17.141)
Structure:
Last name, First name Middle initial. Title of Work. Format. City: Publishing Company, copyright date. Source,Collection. Medium, http://...(accessed date).
Example: Ashmun, Jehudi. Map of the West Coast of Africa from Sierra Leone to Cape Palmas, including the Colony of Liberia. Map. Philadelphia: A. Finley, 1830. From Library of Congress, Map Collections. http://www.loc.gov/item/96680499(accessed January 9, 2006).
MLA Citation Format (MLA Handbook, 7th ed., sections 5.7.8 and 5.6.2c)
Structure:
Title. Map. Location: publisher, date. Title of the Web site. Web. Day Month Year of access. <opt. URL>.
Example: Map of the West Coast of Africa from Sierra Leone to Cape Palmas, including the Colony of Liberia. Map. Philadelphia: Finley, 1830. Lib. of Cong. Web. 10 Feb. 2012. <http://www.loc.gov/item/96680499>.