APA (7th ed.) Zitazioa

Guthrie. (1947). The Big Sky (1st.). Time-Life Books Inc..

Chicago Style (17th ed.) Zitazioa

Guthrie. The Big Sky. 1st. Alexandria, Va: Time-Life Books Inc., 1947.

MLA (9th ed.) Zitazioa

Guthrie. The Big Sky. 1st. Time-Life Books Inc., 1947.