Burton, J. (2009). The deadliest outlaws: The Ketchum gang and the Wild Bunch (2nd ed.). University of North Texas Press.
Chicago-viite (17. p.)Burton, Jeffrey. The Deadliest Outlaws: The Ketchum Gang and the Wild Bunch. 2nd ed. Denton, Tex.: University of North Texas Press, 2009.
MLA-viite (9. p.)Burton, Jeffrey. The Deadliest Outlaws: The Ketchum Gang and the Wild Bunch. 2nd ed. University of North Texas Press, 2009.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.