एपीए उद्धरण

Wardlaw, M. (2004). Effectiveness of cycle helmets and the ethics of legislation. The Royal Society of Medicine.

शिकागो स्टाइल उद्धरण

Wardlaw, Malcolm. Effectiveness of Cycle Helmets and the Ethics of Legislation. The Royal Society of Medicine, 2004.

एमएलए उद्धरण

Wardlaw, Malcolm. Effectiveness of Cycle Helmets and the Ethics of Legislation. The Royal Society of Medicine, 2004.