ASTM Committee E-17 on Traveled Surface Characteristics, Symposium on Roughness Methodology, Gillespie, T. D., & Sayers, M. W. (1985). Measuring road roughness and its effects on user cost and comfort: A symposium. ASTM.
Chicago Style (17th ed.) CitationASTM Committee E-17 on Traveled Surface Characteristics, Symposium on Roughness Methodology, T. D. Gillespie, and M. W. Sayers. Measuring Road Roughness and Its Effects on User Cost and Comfort: A Symposium. Philadelphia, PA (1916 Race St., Philadelphia 19103): ASTM, 1985.
MLA (8th ed.) CitationASTM Committee E-17 on Traveled Surface Characteristics, et al. Measuring Road Roughness and Its Effects on User Cost and Comfort: A Symposium. ASTM, 1985.
Warning: These citations may not always be 100% accurate.