Frank, J., & Pullen, Z. (2004). The toughest cowboy: Or how the wild west was tamed (1st. ed.). Simon & Schuster Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrank, John, और Zachary Pullen. The Toughest Cowboy: Or How the Wild West Was Tamed. 1st. ed. New York: Simon & Schuster Books for Young Readers, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrank, John, और Zachary Pullen. The Toughest Cowboy: Or How the Wild West Was Tamed. 1st. ed. Simon & Schuster Books for Young Readers, 2004.
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