APA (7th ed.) Citation

Naylor, V. J., & Bentrup, D. M. (1987). Ajo Mountain Drive, Organ Pipe Cactus. Southwest Parks and Monuments Association.

Chicago Style (17th ed.) Citation

Naylor, Valerie J., and Diane M. Bentrup. Ajo Mountain Drive, Organ Pipe Cactus. [Globe, Arizona?]: Southwest Parks and Monuments Association, 1987.

MLA (9th ed.) Citation

Naylor, Valerie J., and Diane M. Bentrup. Ajo Mountain Drive, Organ Pipe Cactus. Southwest Parks and Monuments Association, 1987.