APA

Gratton E., Hobbs J. & Keigan M. (1976). Anatomical sites and severities of injury in unprotected road users. : Biomechanics of injury to pedestrians, cyclists and motorcyclists. Proceedings.

Chicago

Gratton E, Hobbs JA and Keigan ME. 1976. Anatomical sites and severities of injury in unprotected road users. : Biomechanics of injury to pedestrians, cyclists and motorcyclists. Proceedings.

Harvard

Gratton E., Hobbs J. and Keigan M. (1976). Anatomical sites and severities of injury in unprotected road users. : Biomechanics of injury to pedestrians, cyclists and motorcyclists. Proceedings.

MLA

Gratton E, Hobbs JA and Keigan ME. Anatomical sites and severities of injury in unprotected road users. : Biomechanics of injury to pedestrians, cyclists and motorcyclists. Proceedings. 1976.