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. Nueva York, EUA: New American Library, 1965.
Cita MLA (9th ed.)
Heffner, Richard D. A Documentary History of The United States. New American Library, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.