APA Style

Callan, S, J., Thomas, J, M. (2013). Environmental Economics & Management: Theory, Policy, and Applications (Ed. 6th). United States: South-Western Cengage Learning.

MLA Style

Callan, Scott, J.., Thomas, Janet, M.. "Environmental Economics & Management: Theory, Policy, and Applications". Ed. 6th United States: South-Western Cengage Learning, 2013. Art Original.