Citazione Stile APA (7a Edizione)

Green, H. (1973). Accidents at roundabouts before and after the priority rule. Transport and Road Research Laboratory.

Citazione stile Chigago Style (17a edizione)

Green, Hilary. Accidents at Roundabouts Before and After the Priority Rule. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1973.

Citatione MLA (9a ed.)

Green, Hilary. Accidents at Roundabouts Before and After the Priority Rule. Transport and Road Research Laboratory, 1973.