Her Majesty's Stationery Office. (1968). Manual of police Driving instruction.
Chicago-referens (17:e uppl.)Her Majesty's Stationery Office. Manual of Police Driving Instruction. London, 1968.
MLA-referens (8:e uppl.)Her Majesty's Stationery Office. Manual of Police Driving Instruction. 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.