Cita APA (7th ed.)

Time-Life Books & Denker, W. (1984). The United States. Time-Life Books.

Cita Chicago (17th ed.)

Time-Life Books i Winnie Denker. The United States. Amsterdam: Time-Life Books, 1984.

Cita MLA (8th ed.)

Time-Life Books i Winnie Denker. The United States. Time-Life Books, 1984.