ebrary, Inc. (2006). PE pipe: Design and installation. American Water Works Association.
Chicago Style (17th ed.) Citationebrary, Inc. PE Pipe: Design and Installation. Denver, Colo.: American Water Works Association, 2006.
MLA引文ebrary, Inc. PE Pipe: Design and Installation. American Water Works Association, 2006.
警告:這些引文格式不一定是100%准確.