Não informado. (1979). Journal of Advanced Transportation. Institute for Transportation.
Chicago-referens (17:e uppl.)Não informado. Journal of Advanced Transportation. Durham, NC: Institute for Transportation, 1979.
MLA-referens (8:e uppl.)Não informado. Journal of Advanced Transportation. Institute for Transportation, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.