Cita APA

Lutgens, F. K., & Tarbuck, E. J. (2015). Essentials of geology (12e, Global edition.). Pearson.

Citación estilo Chicago

Lutgens, Frederick K., and Edward J. Tarbuck. Essentials of Geology. 12e, Global edition. Boston, MA: Pearson, 2015.

Cita MLA

Lutgens, Frederick K., and Edward J. Tarbuck. Essentials of Geology. 12e, Global edition. Pearson, 2015.