Cita APA (7th ed.)

Mackie, A., & Russam, K. (1976). Instructions to drivers to maintain safe spacings between following vehicles. Transport and Road Research Laboratory.

Cita Chicago (17th ed.)

Mackie, A.M, i K. Russam. Instructions to Drivers to Maintain Safe Spacings Between Following Vehicles. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1976.

Cita MLA (9th ed.)

Mackie, A.M, i K. Russam. Instructions to Drivers to Maintain Safe Spacings Between Following Vehicles. Transport and Road Research Laboratory, 1976.