Dyfyniad APA
Schroeder Edward D. (1977). Water and waste water treatment. Mc Graw Hill.
Dyfyniad Arddull Chicago
Schroeder Edward D. Water and Waste Water Treatment. New York: Mc Graw Hill, 1977.
Dyfyniad MLA
Schroeder Edward D. Water and Waste Water Treatment. Mc Graw Hill, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.