APA (7th ed.) Citation

Keen, M. L. (1979). Be a rockhound. J. Messner.

Chicago Style (17th ed.) Citation

Keen, Martin L. Be a Rockhound. New York: J. Messner, 1979.

MLA (9th ed.) Citation

Keen, Martin L. Be a Rockhound. J. Messner, 1979.

Warning: These citations may not always be 100% accurate.