UNITED NATION. (2002). GLOBAL ENVIRONMENT OUTLOOK 3-CD. EARTHSCAN.
Citazione stile Chigago Style (17a edizione)UNITED NATION. GLOBAL ENVIRONMENT OUTLOOK 3-CD. LONDON: EARTHSCAN, 2002.
Citatione MLA (9a ed.)UNITED NATION. GLOBAL ENVIRONMENT OUTLOOK 3-CD. EARTHSCAN, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.