Callan, S., & Thomas, J. M. (1996). Environmental economics and management: Theory, policy, and applications. Irwin.
Čikaški stil citiranja (17. izdanje)Callan, Scott, i Janet M. Thomas. Environmental Economics and Management: Theory, Policy, and Applications. Chicago: Irwin, 1996.
MLA način citiranja (8. izdanje)Callan, Scott, i Janet M. Thomas. Environmental Economics and Management: Theory, Policy, and Applications. Irwin, 1996.
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