APA (7th ed.) Citation

Bach, O. E. (1979). Hiking the Yellowstone backcountry (2nd rev. ed.). Sierra Club.

Chicago Style (17th ed.) Citation

Bach, Orville E. Hiking the Yellowstone Backcountry. 2nd rev. ed. San Francisco, Calif.: Sierra Club, 1979.

MLA (9th ed.) Citation

Bach, Orville E. Hiking the Yellowstone Backcountry. 2nd rev. ed. Sierra Club, 1979.