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Cita Chicago Style (17a ed.)[Dublin], United Nations Environment Programme, Essam editor El Hinnawi, y Manzur Ul Haque editor/a Hashmi. Global Environmental Issues. Dublin, Ireland Tycooly International, 1982.
Cita MLA (8a ed.)[Dublin], United Nations Environment Programme, et al. Global Environmental Issues. Dublin, Ireland Tycooly International, 1982.
Cita IICA/CATIE[Dublin], U. N. E. P., El Hinnawi, E. e., ; Hashmi, M. U. H. e. 1982. Global environmental Issues. Dublin, Ireland Tycooly International.