National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, National Cooperative Highway Research Program, & McGrath, T. J. (2002). Recommended specifications for large-span culverts. National Academy Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, National Cooperative Highway Research Program, और T. J. McGrath. Recommended Specifications for Large-span Culverts. Washington, D.C: National Academy Press, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board, et al. Recommended Specifications for Large-span Culverts. National Academy Press, 2002.