National Research Council (U.S.). Transportation Research Board, National Cooperative Highway Research Program, & Texas Transportation Institute. (1999). Conversion of AASHTO documents to metric units. Transportation Research Board, National Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board, National Cooperative Highway Research Program, और Texas Transportation Institute. Conversion of AASHTO Documents to Metric Units. Washington, D.C: Transportation Research Board, National Research Council, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board, et al. Conversion of AASHTO Documents to Metric Units. Transportation Research Board, National Research Council, 1999.