American Public Health Association & Rice, E. W. (2012). Standard methods for the examination of water and wastewater (22nd ed.). American Public Health Association.
Dyfyniad Arddull ChicagoAmerican Public Health Association and Eugene W. Rice. Standard Methods for the Examination of Water and Wastewater. 22nd ed. Wasington, DC: American Public Health Association, 2012.
Dyfyniad MLAAmerican Public Health Association and Eugene W. Rice. Standard Methods for the Examination of Water and Wastewater. 22nd ed. American Public Health Association, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.