APA (7th ed.) Citation

Putnam, W. C., Larson, E. E., & Birkeland, P. W. Putman's geology (4th ed.).

Chicago Style (17th ed.) Citation

Putnam, William C., Edwin E. Larson, and Peter W. Birkeland. Putman's Geology. 4th ed. Oxford University Press, c1982.

MLA (9th ed.) Citation

Putnam, William C., et al. Putman's Geology. 4th ed.