Dyfyniad APA

Time-Life Books & Forbis, W. H. (1973). The cowboys. Time-Life Books.

Dyfyniad Arddull Chicago

Time-Life Books and William H. Forbis. The Cowboys. New York: Time-Life Books, 1973.

Dyfyniad MLA

Time-Life Books and William H. Forbis. The Cowboys. Time-Life Books, 1973.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.