Não informado. (2000). Global Environmental Research. Association of International Research Initiatives for Environmental Studies.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Global Environmental Research. Tokyo: Association of International Research Initiatives for Environmental Studies, 2000.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Global Environmental Research. Association of International Research Initiatives for Environmental Studies, 2000.
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