American Society for Testing and Materials & ASTM International. (2010). Standard specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings. American Society for Testing and Materials.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Society for Testing and Materials और ASTM International. Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings. Philadelphia, Pa.: American Society for Testing and Materials, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAmerican Society for Testing and Materials और ASTM International. Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings. American Society for Testing and Materials, 2010.
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