Grotzinger, J., & ...[et al.]. (2007). Understanding earth (5th ed.). W.H. Freeman and Company.
Chicago Edition CitationGrotzinger, John, i ...[et al.]. Understanding Earth. 5th ed. New York: W.H. Freeman and Company, 2007.
Cita MLAGrotzinger, John, i ...[et al.]. Understanding Earth. 5th ed. W.H. Freeman and Company, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.