Sabey, B. E. (1973). Road accidents in darkness. Transport and Road Research Laboratory.
Citazione stile Chigago Style (17a edizione)Sabey, Barbara E. Road Accidents in Darkness. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1973.
Citatione MLA (9a ed.)Sabey, Barbara E. Road Accidents in Darkness. Transport and Road Research Laboratory, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.