SPENCE, W. P. (1979). Architecture: Design, engineering, drawing. McKnight.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSPENCE, William P. Architecture: Design, Engineering, Drawing. McKnight, 1979.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSPENCE, William P. Architecture: Design, Engineering, Drawing. McKnight, 1979.
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