Callan, S., & Thomas, J. M. (2013). Environmental economics & management: Theory, policy, and applications (6th ed.). South-Western , Cengage Learrning.
Chicago-Zitierstil (17. Ausg.)Callan, Scott, und Janet M. Thomas. Environmental Economics & Management: Theory, Policy, and Applications. 6th ed. Australia: South-Western , Cengage Learrning, 2013.
MLA-Zitierstil (9. Ausg.)Callan, Scott, und Janet M. Thomas. Environmental Economics & Management: Theory, Policy, and Applications. 6th ed. South-Western , Cengage Learrning, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.