Gaya APA

Pagiola, S. et al (2002). Selling forest environmental services: market-based mechanisms for conservation and development . New York: Earthscan Publications.

Gaya MLA

Pagiola, Stefano. et al. "Selling forest environmental services: market-based mechanisms for conservation and development". New York: Earthscan Publications, 2002. Koleksi Elektronik.