APA (7th ed.) Citation

Gumerman, G. J. (1988). The Anasazi in a changing environment. Cambridge University Press.

Chicago Style (17th ed.) Citation

Gumerman, George J. The Anasazi in a Changing Environment. Cambridge ; New York: Cambridge University Press, 1988.

MLA (9th ed.) Citation

Gumerman, George J. The Anasazi in a Changing Environment. Cambridge University Press, 1988.