Cita APA

Grotzinger, J. (2007). Understanding earth (5th ed.). New York: W.H. Freeman and Company.

Citación estilo Chicago

Grotzinger, John. Understanding Earth. 5th ed. New York: W.H. Freeman and Company, 2007.

Cita MLA

Grotzinger, John. Understanding Earth. 5th ed. New York: W.H. Freeman and Company, 2007.