Cita APA (7a ed.)
(2002). Global Environment Outlook 3 (GEO - 3): Data compendium. United Nations Environment Programme.
Cita Chicago Style (17a ed.)
Global Environment Outlook 3 (GEO - 3): Data Compendium. Kenya,Nairobi: United Nations Environment Programme, 2002.
Cita MLA (9a ed.)
Global Environment Outlook 3 (GEO - 3): Data Compendium. United Nations Environment Programme, 2002.
Precaución: Estas citas no son 100% exactas.