Dyfyniad APA

Water Environment Federation. (2008). Operation of municipal wastewater treatment plants (6th ed.). New York: WEF Press ; McGraw Hill.

Dyfyniad Arddull Chicago

Water Environment Federation. Operation of Municipal Wastewater Treatment Plants. 6th ed. New York: WEF Press ; McGraw Hill, 2008.

Dyfyniad MLA

Water Environment Federation. Operation of Municipal Wastewater Treatment Plants. 6th ed. New York: WEF Press ; McGraw Hill, 2008.

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