Não informado. (1977). Journal of the Technical Councils of ASCE. American Society of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Technical Councils of ASCE. New York: American Society of Civil Engineers, 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Technical Councils of ASCE. American Society of Civil Engineers, 1977.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.