APA način citiranja

Simpson, A. H. R. W., Unwin, P. S., & Nelson, I. W. (1988). Head injuries, helmets, cycle lanes, and cyclists.

Čikaški stil citiranja

Simpson, A H R W., P S. Unwin, i I W. Nelson. Head Injuries, Helmets, Cycle Lanes, and Cyclists. 1988.

MLA način citiranja

Simpson, A H R W., P S. Unwin, i I W. Nelson. Head Injuries, Helmets, Cycle Lanes, and Cyclists. 1988.