APA (7th ed.) Citation

Hough, E. (1918). The passing of the frontier: A chronicle of the old West. Yale university press.

Chicago Style (17th ed.) Citation

Hough, Emerson. The Passing of the Frontier: A Chronicle of the Old West. New Haven: Yale university press, 1918.

MLA (9th ed.) Citation

Hough, Emerson. The Passing of the Frontier: A Chronicle of the Old West. Yale university press, 1918.