Institution of Highways and Transportation (Great Britain)\nHighway and Traffic Technicians Association (Great Britain). (2018). Highways and Transportation. East Midland Allied Press.
Chicago-referens (17:e uppl.)Institution of Highways and Transportation (Great Britain)\nHighway and Traffic Technicians Association (Great Britain). Highways and Transportation. Peterborough, Inglaterra: East Midland Allied Press, 2018.
MLA-referens (8:e uppl.)Institution of Highways and Transportation (Great Britain)\nHighway and Traffic Technicians Association (Great Britain). Highways and Transportation. East Midland Allied Press, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.