APA (7th ed.) Citation

Athearn, R. G., Ubbelohde, C., & Remington, F. (1959). Centennial Colorado: Its exciting story ([1st ed.). E.L. Chambers.

Chicago Style (17th ed.) Citation

Athearn, Robert Greenleaf, Carl Ubbelohde, and Frederic Remington. Centennial Colorado: Its Exciting Story. [1st ed. Denver: E.L. Chambers, 1959.

MLA (9th ed.) Citation

Athearn, Robert Greenleaf, et al. Centennial Colorado: Its Exciting Story. [1st ed. E.L. Chambers, 1959.