APA (7th ed.) Citation

Gregg, J., & Quaife, M. M. (1968). The commerce of the prairies. Citadel Press.

Chicago Style (17th ed.) Citation

Gregg, Josiah, and Milo Milton Quaife. The Commerce of the Prairies. New York: Citadel Press, 1968.

MLA (9th ed.) Citation

Gregg, Josiah, and Milo Milton Quaife. The Commerce of the Prairies. Citadel Press, 1968.