APA (7th ed.) Citation

Frank, J., & Pullen, Z. (2004). The toughest cowboy: Or how the wild west was tamed (1st. ed.). Simon & Schuster Books for Young Readers.

Chicago Style (17th ed.) Citation

Frank, John, and Zachary Pullen. The Toughest Cowboy: Or How the Wild West Was Tamed. 1st. ed. New York: Simon & Schuster Books for Young Readers, 2004.

MLA (8th ed.) Citation

Frank, John, and Zachary Pullen. The Toughest Cowboy: Or How the Wild West Was Tamed. 1st. ed. Simon & Schuster Books for Young Readers, 2004.

Warning: These citations may not always be 100% accurate.