Sabey, B. E. (1980). Road safety and value for money. Transport and Road Research Laboratory, Accident Investigation Division.
Citace podle Chicago (17th ed.)Sabey, Barbara E. Road Safety and Value for Money. Crowthorne, Berk: Transport and Road Research Laboratory, Accident Investigation Division, 1980.
Citace podle MLA (9th ed.)Sabey, Barbara E. Road Safety and Value for Money. Transport and Road Research Laboratory, Accident Investigation Division, 1980.
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