APA (7th ed.) Citation

Davis, W. C. (1992). The American frontier: Pioneers, settlers & cowboys, 1800-1899. Smithmark.

Chicago Style (17th ed.) Citation

Davis, William C. The American Frontier: Pioneers, Settlers & Cowboys, 1800-1899. New York: Smithmark, 1992.

MLA (8th ed.) Citation

Davis, William C. The American Frontier: Pioneers, Settlers & Cowboys, 1800-1899. Smithmark, 1992.

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