Citazione Stile APA (7a Edizione)

Callan, S., & Thomas, J. M. (2000). Environmental economics and management: Theory, policy, and applications (2nd ed.). Dryden Press.

Citazione stile Chigago Style (17a edizione)

Callan, Scott, e Janet M. Thomas. Environmental Economics and Management: Theory, Policy, and Applications. 2nd ed. Fort Worth, Tex: Dryden Press, 2000.

Citatione MLA (9a ed.)

Callan, Scott, e Janet M. Thomas. Environmental Economics and Management: Theory, Policy, and Applications. 2nd ed. Dryden Press, 2000.