APA

Mackie A., Russam K., . (1975). Instructions to drivers to maintain safe spacings between following vehicles. Crowthorne: Transport and Road Research Laboratory. Supplementary report 166 UC.

Chicago

Mackie AM, Russam K, . 1975. Instructions to drivers to maintain safe spacings between following vehicles. Crowthorne: Transport and Road Research Laboratory. Supplementary report 166 UC.

Harvard

Mackie A., Russam K., . (1975). Instructions to drivers to maintain safe spacings between following vehicles. Crowthorne: Transport and Road Research Laboratory. Supplementary report 166 UC.

MLA

Mackie AM, Russam K, . Instructions to drivers to maintain safe spacings between following vehicles. Crowthorne: Transport and Road Research Laboratory. Supplementary report 166 UC. 1975.