Dyfyniad APA
AWWA Standards Committee on Fire Hydrants & ebrary, Inc. (2006). Installation, field testing, and maintenance of fire hydrants (4th ed.). American Water Works Association.
Dyfyniad Arddull Chicago
AWWA Standards Committee on Fire Hydrants and Inc ebrary. Installation, Field Testing, and Maintenance of Fire Hydrants. 4th ed. Denver, Colo.: American Water Works Association, 2006.
Dyfyniad MLA
AWWA Standards Committee on Fire Hydrants and Inc ebrary. Installation, Field Testing, and Maintenance of Fire Hydrants. 4th ed. American Water Works Association, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.