Moran, J. M., Morgan, J., & Wiersma, J. H. (1986). Introduction to environmental science\ (2nd ed.). W. H. Freeman.

Moran, Joseph M., Joseph Morgan, and James H. Wiersma. Introduction to Environmental Science\. 2nd ed. New York: W. H. Freeman, 1986.

Moran, Joseph M., et al. Introduction to Environmental Science\. 2nd ed. W. H. Freeman, 1986.