Pipe systems: Transite, PVC, permastran, thermopipes.
Cita Chicago (17th ed.)Pipe Systems: Transite, PVC, Permastran, Thermopipes. Denver, Colorado : Johns-Maville.
Cita MLA (9th ed.)Pipe Systems: Transite, PVC, Permastran, Thermopipes.
Atenció: Aquestes cites poden no estar 100% correctes.