National Research Council (U.S.). Transportation Research Board. Committee on Maintenance and Operations Personnel & American Association of State Highway and Transportation Officials. Subcommittee on Maintenance. (1975). Progress report on maintenance and operations personnel. Transportation Research Board.
Citace podle Chicago (17th ed.)National Research Council (U.S.). Transportation Research Board. Committee on Maintenance and Operations Personnel a American Association of State Highway and Transportation Officials. Subcommittee on Maintenance. Progress Report on Maintenance and Operations Personnel. Washington, D.C: Transportation Research Board, 1975.
Citace podle MLA (9th ed.)National Research Council (U.S.). Transportation Research Board. Committee on Maintenance and Operations Personnel a American Association of State Highway and Transportation Officials. Subcommittee on Maintenance. Progress Report on Maintenance and Operations Personnel. Transportation Research Board, 1975.