Kulkarni, R., & Van Til, C. J. (1984). Manual for the selection of optimal maintenance levels of service. Transportation Research Board, National Research Council.
Lua i Stíl Chicago (17ú heag.)Kulkarni, R., agus Cecil J. Van Til. Manual for the Selection of Optimal Maintenance Levels of Service. Washington, D.C: Transportation Research Board, National Research Council, 1984.
Lua MLA (9ú heag.)Kulkarni, R., agus Cecil J. Van Til. Manual for the Selection of Optimal Maintenance Levels of Service. Transportation Research Board, National Research Council, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.