Dyfyniad APA

Walter Lorch. (1987). Handbook of water purification. New York: John Wiley & Sons.

Dyfyniad Arddull Chicago

Walter Lorch. Handbook of Water Purification. New York: John Wiley & Sons, 1987.

Dyfyniad MLA

Walter Lorch. Handbook of Water Purification. New York: John Wiley & Sons, 1987.

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