APA (7th ed.) Citation

Learn, C. R., & O'Neal, M. (1976). Backpacker's digest (2d ed.). Follett.

Chicago Style (17th ed.) Citation

Learn, C. R., and Mike O'Neal. Backpacker's Digest. 2d ed. Chicago: Follett, 1976.

MLA (9th ed.) Citation

Learn, C. R., and Mike O'Neal. Backpacker's Digest. 2d ed. Follett, 1976.