APA (7th ed.) Zitazioa
Johnson, D. (2008). John Ringo, king of the cowboys: His life and times from the Hoo Doo War to Tombstone (2nd ed.). University of North Texas Press.
Chicago Style (17th ed.) Zitazioa
Johnson, David. John Ringo, King of the Cowboys: His Life and Times from the Hoo Doo War to Tombstone. 2nd ed. Denton, Tex.: University of North Texas Press, 2008.
MLA (9th ed.) Zitazioa
Johnson, David. John Ringo, King of the Cowboys: His Life and Times from the Hoo Doo War to Tombstone. 2nd ed. University of North Texas Press, 2008.
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