APA استشهاد

Corvalan, C. (2005). Ecosystems and human well - being. WHO.

استشهاد بنمط شيكاغو

Corvalan, Carlos. Ecosystems and Human Well - Being. Geneva: WHO, 2005.

MLA استشهاد

Corvalan, Carlos. Ecosystems and Human Well - Being. WHO, 2005.