Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

National Research Council (U.S.). Highway Research Board, Ralph A. Moyer, John W. Shupe, και A. Duke Morgan. Roughness and Skid Resistance: Presented at the Thirtieth Annual Meeting, 1951. Washington, D.C: Highway Research Board, 1951.

Παραπομπή σε μορφή MLA (9th εκδ.)

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.