APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Callan and Thomas. Environmental Economics and Management: Theory, Policy, and Applications. 2nd ed. London: Dryden Press, 2000.

MLA (9th ed.) Citation

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