American Society For Testing Materials. (1976). Standard Specification For Thermoplastic Gas Pressure Pipe, Tubing And Fittings Ansi-Astm D2513-76.
Cita Chicago Style (17a ed.)American Society For Testing Materials. Standard Specification For Thermoplastic Gas Pressure Pipe, Tubing And Fittings Ansi-Astm D2513-76. 1976.
Cita MLA (9a ed.)American Society For Testing Materials. Standard Specification For Thermoplastic Gas Pressure Pipe, Tubing And Fittings Ansi-Astm D2513-76. 1976.
Precaución: Estas citas no son 100% exactas.