National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, & National Research Council (U.S.). Committee on Maintenance and Operations Costs. (1972). Maintenance systems: Estimating maintenance costs, solid-waste disposal systems, maintenance station locations, manager training, and equipment management ; 7 reports. Highway Research Board.
Παραπομπή σε μορφή Chicago (17η εκδ.)National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, και National Research Council (U.S.). Committee on Maintenance and Operations Costs. Maintenance Systems: Estimating Maintenance Costs, Solid-waste Disposal Systems, Maintenance Station Locations, Manager Training, and Equipment Management ; 7 Reports. Washington, D.C: Highway Research Board, 1972.
Παραπομπή σε μορφή MLA (9th εκδ.)National Research Council (U.S.). Highway Research Board, et al. Maintenance Systems: Estimating Maintenance Costs, Solid-waste Disposal Systems, Maintenance Station Locations, Manager Training, and Equipment Management ; 7 Reports. Highway Research Board, 1972.