Παραπομπή APA

Grotzinger, J., & ...[et al.]. (2007). Understanding earth (5th ed.). W.H. Freeman and Company.

Παραπομπή Chicago Style

Grotzinger, John, και ...[et al.]. Understanding Earth. 5th ed. New York: W.H. Freeman and Company, 2007.

Παραπομπή MLA

Grotzinger, John, και ...[et al.]. Understanding Earth. 5th ed. W.H. Freeman and Company, 2007.