APA (7th ed.) Citation

Crumbo, K., & French, L. (1981). A river runner's guide to the history of the Grand Canyon. Johnson Books.

Chicago Style (17th ed.) Citation

Crumbo, Kim, and Llyn French. A River Runner's Guide to the History of the Grand Canyon. Boulder: Johnson Books, 1981.

MLA (9th ed.) Citation

Crumbo, Kim, and Llyn French. A River Runner's Guide to the History of the Grand Canyon. Johnson Books, 1981.