National Research Council (U.S.). Highway Research Board. (1961). Line-haul trucking costs in relation to vehicle gross weights: Presented at the 40th Annual Meeting, January 9-13, 1961. National Academy of Sciences-Nationl Research Council.
Παραπομπή σε μορφή Chicago (17η εκδ.)National Research Council (U.S.). Highway Research Board. Line-haul Trucking Costs in Relation to Vehicle Gross Weights: Presented at the 40th Annual Meeting, January 9-13, 1961. Washington, D.C: National Academy of Sciences-Nationl Research Council, 1961.
Παραπομπή σε μορφή MLA (9th εκδ.)National Research Council (U.S.). Highway Research Board. Line-haul Trucking Costs in Relation to Vehicle Gross Weights: Presented at the 40th Annual Meeting, January 9-13, 1961. National Academy of Sciences-Nationl Research Council, 1961.