Cita APA (7th ed.)

Wilkins, H. A., & Riley, B. S. (1982). The road grip of commercial vehicle tyres. Transport and Road Research Laboratory.

Cita Chicago (17th ed.)

Wilkins, H. A., i B. S. Riley. The Road Grip of Commercial Vehicle Tyres. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1982.

Cita MLA (9th ed.)

Wilkins, H. A., i B. S. Riley. The Road Grip of Commercial Vehicle Tyres. Transport and Road Research Laboratory, 1982.