Dyfyniad APA
Erickson, J. R. (2004). The modern cowboy (2nd ed.). University of North Texas Press.
Dyfyniad Arddull Chicago
Erickson, John R. The Modern Cowboy. 2nd ed. Denton, Tex.: University of North Texas Press, 2004.
Dyfyniad MLA
Erickson, John R. The Modern Cowboy. 2nd ed. University of North Texas Press, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.