Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.