APA (7th ed.) Citation

Hafen, L. R., Willard, J. F., Willard, M. W., & Burkey, E. R. (1941). Colorado gold rush: Contemporary letters and reports, 1858-1859. Arthur H. Clark.

Chicago Style (17th ed.) Citation

Hafen, LeRoy R., James F. Willard, Margaret Wheeler Willard, and Elmer R. Burkey. Colorado Gold Rush: Contemporary Letters and Reports, 1858-1859. Glendale, Calif.: Arthur H. Clark, 1941.

MLA (9th ed.) Citation

Hafen, LeRoy R., et al. Colorado Gold Rush: Contemporary Letters and Reports, 1858-1859. Arthur H. Clark, 1941.