APA (7th ed.) Citation

Zim, H. S. (1964). The Rocky mountains: A golden regional guide. Golden Press.

Chicago Style (17th ed.) Citation

Zim, Herbert S. The Rocky Mountains: A Golden Regional Guide. New York: Golden Press, 1964.

MLA (9th ed.) Citation

Zim, Herbert S. The Rocky Mountains: A Golden Regional Guide. Golden Press, 1964.