Lua APA (7ú heag.)

CALLAN. (1996). Environmental economics & managementtheory, policy, and applications. Irwin.

Lua i Stíl Chicago (17ú heag.)

CALLAN. Environmental Economics & Managementtheory, Policy, and Applications. Irwin, 1996.

Lua MLA (8ú heag.)

CALLAN. Environmental Economics & Managementtheory, Policy, and Applications. Irwin, 1996.

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