Dyfyniad APA
American Water Works Association & ebrary, Inc. (2004). Steel pipe: A guide for design and installation (4th ed.). American Water Works Association.
Dyfyniad Arddull Chicago
American Water Works Association and Inc ebrary. Steel Pipe: A Guide for Design and Installation. 4th ed. Denver, Colo.: American Water Works Association, 2004.
Dyfyniad MLA
American Water Works Association and Inc ebrary. Steel Pipe: A Guide for Design and Installation. 4th ed. American Water Works Association, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.