Tohutoro APA (7th ed.)
Horst Siebert, S. M. Economics of the Environment: Theory and Policy (6a edición.). Springer.
Tohutoru Kātū Chicago (17th ed.)
Horst Siebert, Stephen Muller. Economics of the Environment: Theory and Policy. 6a edición. Berlín, Alemania: Springer.
Tohutoro MLA (9th ed.)
Horst Siebert, Stephen Muller. Economics of the Environment: Theory and Policy. 6a edición. Springer.
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