Cita APA (7th ed.)

Ley, W. (1980). The Poles. Time-Life Books.

Cita Chicago (17th ed.)

Ley, Willy. The Poles. Hongkong: Time-Life Books, 1980.

Cita MLA (9th ed.)

Ley, Willy. The Poles. Time-Life Books, 1980.

Atenció: Aquestes cites poden no estar 100% correctes.