Reed, M. F., Luettich, R. A., Lamm, L. P., & Humphrey, T. F. (1993). Measuring state transportation program performance. Transportation Research Board, National Research Council National Academy Press.
Cita Chicago (17th ed.)Reed, M. F., Richard A. Luettich, Lester P. Lamm, i Thomas F. Humphrey. Measuring State Transportation Program Performance. Washington, D.C: Transportation Research Board, National Research Council National Academy Press, 1993.
Cita MLA (9th ed.)Reed, M. F., et al. Measuring State Transportation Program Performance. Transportation Research Board, National Research Council National Academy Press, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.