National Research Council (U.S.). Highway Research Board, Moyer, R. A., Shupe, J. W., & Morgan, A. D. (1951). Roughness and skid resistance: Presented at the Thirtieth Annual Meeting, 1951. Highway Research Board.
Citace podle Chicago (17th ed.)National Research Council (U.S.). Highway Research Board, Ralph A. Moyer, John W. Shupe, a A. Duke Morgan. Roughness and Skid Resistance: Presented at the Thirtieth Annual Meeting, 1951. Washington, D.C: Highway Research Board, 1951.
Citace podle MLA (9th ed.)National Research Council (U.S.). Highway Research Board, et al. Roughness and Skid Resistance: Presented at the Thirtieth Annual Meeting, 1951. Highway Research Board, 1951.
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