APA (7th ed.) Zitazioa

Ryden, H. (1970). Americans last wild horses. Dutton.

Chicago Style (17th ed.) Zitazioa

Ryden, Hope. Americans Last Wild Horses. New York: Dutton, 1970.

MLA (9th ed.) Zitazioa

Ryden, Hope. Americans Last Wild Horses. Dutton, 1970.