Cita APA (7th ed.)

Heffner, R. D. (1965). A Documentary history of the United States. New American Library.

Cita Chicago (17th ed.)

Heffner, Richard D. A Documentary History of the United States. New York: New American Library, 1965.

Cita MLA (9th ed.)

Heffner, Richard D. A Documentary History of the United States. New American Library, 1965.