APA

Sayers M., Gillespie T., . (1983). Guidelines for the conduct and calibration of road roughness measurements (Supplementary report to the World Bank). Ann Arbor, MI: Michigan University. Transportation Research Institute. UMTRI 83-30.

Chicago

Sayers M, Gillespie TD, . 1983. Guidelines for the conduct and calibration of road roughness measurements (Supplementary report to the World Bank). Ann Arbor, MI: Michigan University. Transportation Research Institute. UMTRI 83-30.

Harvard

Sayers M., Gillespie T., . (1983). Guidelines for the conduct and calibration of road roughness measurements (Supplementary report to the World Bank). Ann Arbor, MI: Michigan University. Transportation Research Institute. UMTRI 83-30.

MLA

Sayers M, Gillespie TD, . Guidelines for the conduct and calibration of road roughness measurements (Supplementary report to the World Bank). Ann Arbor, MI: Michigan University. Transportation Research Institute. UMTRI 83-30. 1983.