Dyfyniad APA

Fair, G. M., & Alexander Okum, D. (1958). Elements of water supply and wastewater disposal (2nd ed.). John Wiley.

Dyfyniad Arddull Chicago

Fair, Gordon Maskew, and Daniel Alexander Okum. Elements of Water Supply and Wastewater Disposal. 2nd ed. New York: John Wiley, 1958.

Dyfyniad MLA

Fair, Gordon Maskew, and Daniel Alexander Okum. Elements of Water Supply and Wastewater Disposal. 2nd ed. John Wiley, 1958.

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