APA (7th ed.) Citation

Gaile, G. L., & Willmott, C. J. (1989). Geography in America. Merrill Pub.

Chicago Style (17th ed.) Citation

Gaile, Gary L., and Cort J. Willmott. Geography in America. Columbus, Ohio: Merrill Pub, 1989.

MLA (9th ed.) Citation

Gaile, Gary L., and Cort J. Willmott. Geography in America. Merrill Pub, 1989.