(2002). Bio-ecological zones of Bangladesh. IUCN.
Chicago Style (17th ed.) ZitazioaBio-ecological Zones of Bangladesh. Dhaka: IUCN, 2002.
MLA (9th ed.) ZitazioaBio-ecological Zones of Bangladesh. IUCN, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.