United Nations Environment Programme & UNEP. Global Environment Outlook 3: Past, present and future perspectives. GEO-3: past, present and future perspectives.
Citação do estilo Chicago (17ª ed.)United Nations Environment Programme e UNEP. Global Environment Outlook 3: Past, Present and Future Perspectives. GEO-3: Past, Present and Future Perspectives. UNEP. EARTHSCAN.
Citação MLA (9ª ed.)United Nations Environment Programme e UNEP. Global Environment Outlook 3: Past, Present and Future Perspectives. GEO-3: Past, Present and Future Perspectives.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.