National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, & Small, K. A. (1999). Valuation of travel-time savings and predictability in congested conditions for highway user-cost estimation. National Academy Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, और Kenneth A. Small. Valuation of Travel-time Savings and Predictability in Congested Conditions for Highway User-cost Estimation. Washington, D.C: National Academy Press, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Cooperative Highway Research Program, et al. Valuation of Travel-time Savings and Predictability in Congested Conditions for Highway User-cost Estimation. National Academy Press, 1999.