Wilkins, H. A., & Riley, B. S. (1982). The road grip of commercial vehicle tyres. Transport and Road Research Laboratory.
Chicago-viite (17. p.)Wilkins, H. A., ja B. S. Riley. The Road Grip of Commercial Vehicle Tyres. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1982.
MLA-viite (9. p.)Wilkins, H. A., ja B. S. Riley. The Road Grip of Commercial Vehicle Tyres. Transport and Road Research Laboratory, 1982.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.