Tyler, J. W. (1979). TRRL quiet vehicle programme: Quiet heavy vehicle (QHV) project. Transport and Road Research Laboratory.
Chicago-referens (17:e uppl.)Tyler, J. W. TRRL Quiet Vehicle Programme: Quiet Heavy Vehicle (QHV) Project. Crowthorne, Berk: Transport and Road Research Laboratory, 1979.
MLA-referens (9:e uppl.)Tyler, J. W. TRRL Quiet Vehicle Programme: Quiet Heavy Vehicle (QHV) Project. Transport and Road Research Laboratory, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.