APA (7th ed.) Citation

Butchart, H. (1970). Grand Canyon treks: A guide to the inner canyon routes. La Siesta Press.

Chicago Style (17th ed.) Citation

Butchart, Harvey. Grand Canyon Treks: A Guide to the Inner Canyon Routes. Glendale, Calif.: La Siesta Press, 1970.

MLA (9th ed.) Citation

Butchart, Harvey. Grand Canyon Treks: A Guide to the Inner Canyon Routes. La Siesta Press, 1970.