APA (7th ed.) Citation

Hassrick, R. B. (1974). Cowboys: The real story of cowboys and cattlemen. Octopus Books.

Chicago Style (17th ed.) Citation

Hassrick, Royal B. Cowboys: The Real Story of Cowboys and Cattlemen. London: Octopus Books, 1974.

MLA (9th ed.) Citation

Hassrick, Royal B. Cowboys: The Real Story of Cowboys and Cattlemen. Octopus Books, 1974.