(1973). Architecture Design Engineering Drawing / William P. Spence. McKnight.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रArchitecture Design Engineering Drawing / William P. Spence. McKnight, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रArchitecture Design Engineering Drawing / William P. Spence. McKnight, 1973.
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