American Water Works Association, American National Standards Institute, & ebrary, Inc. (2012). Granular activated carbon. American Water Works Association.
Dyfyniad Arddull ChicagoAmerican Water Works Association, American National Standards Institute, and Inc ebrary. Granular Activated Carbon. [New York?]: American Water Works Association, 2012.
Dyfyniad MLAAmerican Water Works Association, et al. Granular Activated Carbon. American Water Works Association, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.