Dyfyniad APA

Pickering, W. F. (1977). Pollution Evaluation: The Quantitative Aspects. Marcel Dekker.

Dyfyniad Arddull Chicago

Pickering, Willim. F. Pollution Evaluation: The Quantitative Aspects. New York: Marcel Dekker, 1977.

Dyfyniad MLA

Pickering, Willim. F. Pollution Evaluation: The Quantitative Aspects. Marcel Dekker, 1977.

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