Cita APA (7th ed.)

RITCHIE, D. A. (1985). Heritagemof freedom: History of the united states. Scribner educational.

Cita Chicago (17th ed.)

RITCHIE, Donald A. Heritagemof Freedom: History of the United States. New York: Scribner educational, 1985.

Cita MLA (9th ed.)

RITCHIE, Donald A. Heritagemof Freedom: History of the United States. Scribner educational, 1985.