Barker, B. A. (2012). Codes for homeowners: Your photo guide to electrical codes, plumbing codes, building codes, mechanical codes ([2nd ed.].). Creative Publishing International.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarker, Bruce A. Codes for Homeowners: Your Photo Guide to Electrical Codes, Plumbing Codes, Building Codes, Mechanical Codes. [2nd ed.]. Minneapolis, Minn.: Creative Publishing International, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBarker, Bruce A. Codes for Homeowners: Your Photo Guide to Electrical Codes, Plumbing Codes, Building Codes, Mechanical Codes. [2nd ed.]. Creative Publishing International, 2012.
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