APA (7th ed.) Citation

Zwinger, A., & Collier, M. (2006). Grand Canyon: Little things in a big place. University of Arizona Press.

Chicago Style (17th ed.) Citation

Zwinger, Ann, and Michael Collier. Grand Canyon: Little Things in a Big Place. Tucson: University of Arizona Press, 2006.

MLA (9th ed.) Citation

Zwinger, Ann, and Michael Collier. Grand Canyon: Little Things in a Big Place. University of Arizona Press, 2006.