APA (7th ed.) Citation

Darrah, W. C. (1951). Powell of the Colorado. Princeton University Press.

Chicago Style (17th ed.) Citation

Darrah, William Culp. Powell of the Colorado. Priceton: Princeton University Press, 1951.

MLA (9th ed.) Citation

Darrah, William Culp. Powell of the Colorado. Princeton University Press, 1951.