Dyfyniad APA

Mason, C. F. (1981). Biology of freshwater pollution. Longman Scientific and Technical.

Dyfyniad Arddull Chicago

Mason, C. F. Biology of Freshwater Pollution. England: Longman Scientific and Technical, 1981.

Dyfyniad MLA

Mason, C. F. Biology of Freshwater Pollution. Longman Scientific and Technical, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.