Não informado. (2002). Civil engineering technology. Society of Civil Engineering Technicians.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Civil Engineering Technology. London: Society of Civil Engineering Technicians, 2002.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Civil Engineering Technology. Society of Civil Engineering Technicians, 2002.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.