Dyfyniad APA
Schroeder, E. D. (1977). Water and wastewater treatment. McGraw-Hill.
Dyfyniad Arddull Chicago
Schroeder, Edward D. Water and Wastewater Treatment. New York: McGraw-Hill, 1977.
Dyfyniad MLA
Schroeder, Edward D. Water and Wastewater Treatment. McGraw-Hill, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.