APA (7th ed.) Citation

Collier, M. (1980). An introduction to Grand Canyon geology. Grand Canyon Natural History Association.

Chicago Style (17th ed.) Citation

Collier, Michael. An Introduction to Grand Canyon Geology. [Grand Canyon, Ariz.?]: Grand Canyon Natural History Association, 1980.

MLA (9th ed.) Citation

Collier, Michael. An Introduction to Grand Canyon Geology. Grand Canyon Natural History Association, 1980.