Cita APA

Lutgens, F. K., & Tarbuck, E. J. (2011). Essentials of geology (11th ed.). Prentice Hall.

Citación estilo Chicago

Lutgens, Frederick K., and Edward J. Tarbuck. Essentials of Geology. 11th ed. Upper Saddle River, N.J: Prentice Hall, 2011.

Cita MLA

Lutgens, Frederick K., and Edward J. Tarbuck. Essentials of Geology. 11th ed. Prentice Hall, 2011.

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