APA
Gillespie T. D., Sayers M., ASTM Committee E-17 on Traveled Surface Characteristics & Symposium on Roughness Methodology. (1985). Measuring road roughness and its effects on user cost and comfort. Philadelphia, Pa: ASTM.
Chicago
Gillespie Thomas D, Sayers Michael, ASTM Committee E-17 on Traveled Surface Characteristics and Symposium on Roughness Methodology. 1985. Measuring road roughness and its effects on user cost and comfort. Philadelphia, Pa: ASTM.
Harvard
Gillespie T. D., Sayers M., ASTM Committee E-17 on Traveled Surface Characteristics and Symposium on Roughness Methodology. (1985). Measuring road roughness and its effects on user cost and comfort. Philadelphia, Pa: ASTM.
MLA
Gillespie Thomas D, Sayers Michael, ASTM Committee E-17 on Traveled Surface Characteristics and Symposium on Roughness Methodology. Measuring road roughness and its effects on user cost and comfort. Philadelphia, Pa: ASTM. 1985.