Ashley, C. A. (1994). Traffic and highway engineering for developments. Blackwell Scientific Publications.
Chicago-referens (17:e uppl.)Ashley, C. A. Traffic and Highway Engineering for Developments. Oxford, Boston: Blackwell Scientific Publications, 1994.
MLA-referens (9:e uppl.)Ashley, C. A. Traffic and Highway Engineering for Developments. Blackwell Scientific Publications, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.