Green, H. (1973). Accidents at roundabouts before and after the priority rule. Transport and Road Research Laboratory.
Citace podle Chicago (17th ed.)Green, Hilary. Accidents at Roundabouts Before and After the Priority Rule. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1973.
Citace podle MLA (9th ed.)Green, Hilary. Accidents at Roundabouts Before and After the Priority Rule. Transport and Road Research Laboratory, 1973.
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