APA aipamena

C.Field Barry, & K.Field Martha. (2005). Environmental Economics. American: MC Graw Hill.

Chicago Style aipamena

C.Field Barry, và K.Field Martha. Environmental Economics. American: MC Graw Hill, 2005.

MLA aipamena

C.Field Barry, và K.Field Martha. Environmental Economics. American: MC Graw Hill, 2005.

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