APA aipamena

Kahn, J. R. (2005). The economic approach to environmental and natural resources. Victoria, Australia: Thomson (South-Western).

Chicago Style aipamena

Kahn, James R. The Economic Approach to Environmental and Natural Resources. Victoria, Australia: Thomson (South-Western), 2005.

MLA aipamena

Kahn, James R. The Economic Approach to Environmental and Natural Resources. Victoria, Australia: Thomson (South-Western), 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.