APA (7th ed.) Citation

Lutgens, F. K. (1998). Essentials of geology (6th ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Lutgens, Frederick K. Essentials of Geology. 6th ed. Upper Saddle River, N.J.: Prentice Hall, 1998.

MLA (8th ed.) Citation

Lutgens, Frederick K. Essentials of Geology. 6th ed. Prentice Hall, 1998.

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