Kulkarni, R., & Van Til, C. J. (1984). Manual for the selection of optimal maintenance levels of service. Transportation Research Board, National Research Council.
Cita Chicago (17th ed.)Kulkarni, R., i Cecil J. Van Til. Manual for the Selection of Optimal Maintenance Levels of Service. Washington, D.C: Transportation Research Board, National Research Council, 1984.
Cita MLA (9th ed.)Kulkarni, R., i Cecil J. Van Til. Manual for the Selection of Optimal Maintenance Levels of Service. Transportation Research Board, National Research Council, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.