APA-referens (7:e uppl.)

Environmental Science and Sustainable Development | International Experts for Research Enrichment and Knowledge Exchange. Cambridge University Press.

Chicago-referens (17:e uppl.)

Environmental Science and Sustainable Development | International Experts for Research Enrichment and Knowledge Exchange. Cambridge University Press.

MLA-referens (8:e uppl.)

Environmental Science and Sustainable Development | International Experts for Research Enrichment and Knowledge Exchange. Cambridge University Press.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.