APA (7th ed.) Citation

Tilton, B., & Hubbell, F. (1990). Medicine for the backcountry. OCS Books.

Chicago Style (17th ed.) Citation

Tilton, Buck, and Frank Hubbell. Medicine for the Backcountry. Indiana: OCS Books, 1990.

MLA (9th ed.) Citation

Tilton, Buck, and Frank Hubbell. Medicine for the Backcountry. OCS Books, 1990.