Cita APA (7th ed.)

Tisdell, C. A. (1991). Economics of environmental conservation. Elsevier.

Cita Chicago (17th ed.)

Tisdell, Clement Allan. Economics of Environmental Conservation. Amsterdam: Elsevier, 1991.

Cita MLA (9th ed.)

Tisdell, Clement Allan. Economics of Environmental Conservation. Elsevier, 1991.