APA (7th ed.) Citation

Lutgens, F. K., & Tarbuck, E. J. (1982). Essentials of geology. Merrill.

Chicago Style (17th ed.) Citation

Lutgens, Frederick K., and Edward J. Tarbuck. Essentials of Geology. Columbus u.a: Merrill, 1982.

MLA (9th ed.) Citation

Lutgens, Frederick K., and Edward J. Tarbuck. Essentials of Geology. Merrill, 1982.

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