APA (7th ed.) Zitazioa
Erickson, J. R. (2004). The modern cowboy (2nd ed.). University of North Texas Press.
Chicago Style (17th ed.) Zitazioa
Erickson, John R. The Modern Cowboy. 2nd ed. Denton, Tex.: University of North Texas Press, 2004.
MLA (9th ed.) Zitazioa
Erickson, John R. The Modern Cowboy. 2nd ed. University of North Texas Press, 2004.
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