Cita APA (7th ed.)

Havemann, E. (1967). Birth control. Time-Life Books.

Cita Chicago (17th ed.)

Havemann, Ernest. Birth Control. New York: Time-Life Books, 1967.

Cita MLA (9th ed.)

Havemann, Ernest. Birth Control. Time-Life Books, 1967.

Atenció: Aquestes cites poden no estar 100% correctes.