Dyfyniad APA

Mason, C. F. (1996). Biology of freshwater pollution (Third edition.). Longmans.

Dyfyniad Arddull Chicago

Mason, C. F. Biology of Freshwater Pollution. Third edition. Essex: Longmans, 1996.

Dyfyniad MLA

Mason, C. F. Biology of Freshwater Pollution. Third edition. Longmans, 1996.

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