United Nations Environment Programme. (2001). Bangladesh: State of the environment 2001. United Nations Environment Programme.
Chicago Style (17th ed.) CitationUnited Nations Environment Programme. Bangladesh: State of the Environment 2001. Pathumthani, Thailand: United Nations Environment Programme, 2001.
MLA引文United Nations Environment Programme. Bangladesh: State of the Environment 2001. United Nations Environment Programme, 2001.
警告:這些引文格式不一定是100%准確.