CALLAN, S. J., & THOMAS, J. M. (1996). Environmental economics and management: Theory, policyand applications. Irwin.
Lua i Stíl Chicago (17ú heag.)CALLAN, Scott J., agus Janet M. THOMAS. Environmental Economics and Management: Theory, Policyand Applications. Chicago: Irwin, 1996.
Lua MLA (9ú heag.)CALLAN, Scott J., agus Janet M. THOMAS. Environmental Economics and Management: Theory, Policyand Applications. Irwin, 1996.
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