Cita APA

Dixon, J. A., & Sherman, P. B. (1990). Economics of protected areas: A new look at benefits and costs. Washington, D. C.: Island.

Citación estilo Chicago

Dixon, John A., y Paul B. Sherman. Economics of Protected Areas: A New Look At Benefits and Costs. Washington, D. C.: Island, 1990.

Cita MLA

Dixon, John A., y Paul B. Sherman. Economics of Protected Areas: A New Look At Benefits and Costs. Washington, D. C.: Island, 1990.