APA ציטוט

Heffner, R. D. (1956). A documentary history of the United States. The New American Library of World Literature.

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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