Dyfyniad APA

Harmer, M. J. (1975). Water and Waste-water Technology. John Wiley.

Dyfyniad Arddull Chicago

Harmer, Mark. J. Water and Waste-water Technology. New York: John Wiley, 1975.

Dyfyniad MLA

Harmer, Mark. J. Water and Waste-water Technology. John Wiley, 1975.

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