Dyfyniad APA
ebrary, Inc, & American Water Works Association. (2002). Simplified procedures for water examination (5th ed.). American Water Works Association.
Dyfyniad Arddull Chicago
ebrary, Inc, and American Water Works Association. Simplified Procedures for Water Examination. 5th ed. Denver, CO: American Water Works Association, 2002.
Dyfyniad MLA
ebrary, Inc, and American Water Works Association. Simplified Procedures for Water Examination. 5th ed. American Water Works Association, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.