APA (7th ed.) Zitazioa

Beiser, A. (1968). The earth. Time-Life Books.

Chicago Style (17th ed.) Zitazioa

Beiser, Arthur. The Earth. New York: Time-Life Books, 1968.

MLA (9th ed.) Zitazioa

Beiser, Arthur. The Earth. Time-Life Books, 1968.