Style de citation APA (7e éd.)

Heffner, R. D. (1956). A documentary History of the united states. The New American Library.

Style de citation Chicago (17e éd.)

Heffner, Richard D. A Documentary History of the United States. New York: The New American Library, 1956.

Style de citation MLA (9e éd.)

Heffner, Richard D. A Documentary History of the United States. The New American Library, 1956.