Dyfyniad APA

Sabey, B. E. (1980). Road safety and value for money. Transport and Road Research Laboratory, Accident Investigation Division.

Dyfyniad Arddull Chicago

Sabey, Barbara E. Road Safety and Value for Money. Crowthorne, Berk: Transport and Road Research Laboratory, Accident Investigation Division, 1980.

Dyfyniad MLA

Sabey, Barbara E. Road Safety and Value for Money. Transport and Road Research Laboratory, Accident Investigation Division, 1980.

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