WATSON, D. (2000). Time-saver standards for building materials and systems Donald Watson. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWATSON, Donald. Time-saver Standards for Building Materials and Systems Donald Watson. McGraw-Hill, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWATSON, Donald. Time-saver Standards for Building Materials and Systems Donald Watson. McGraw-Hill, 2000.
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