APA (7th ed.) Citation

Thompson, G. R., & Turk, J. (1998). Introduction to physical geology. Saunders College Publishing.

Chicago Style (17th ed.) Citation

Thompson, Graham R., and Jonathan Turk. Introduction to Physical Geology. Fort Worth: Saunders College Publishing, 1998.

MLA (8th ed.) Citation

Thompson, Graham R., and Jonathan Turk. Introduction to Physical Geology. Saunders College Publishing, 1998.