National Research Council (U.S.). Transportation Research Board. (1991). Integrity testing of foundations 1991. Transportation Research Board, National Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board. Integrity Testing of Foundations 1991. Washington, D.C: Transportation Research Board, National Research Council, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board. Integrity Testing of Foundations 1991. Transportation Research Board, National Research Council, 1991.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.