Não informado. (2004). Journal of Public Transportation. University of South Florida, National Center for Transit Research.
Chicago-referens (17:e uppl.)Não informado. Journal of Public Transportation. Tampa, Fla: University of South Florida, National Center for Transit Research, 2004.
MLA-referens (8:e uppl.)Não informado. Journal of Public Transportation. University of South Florida, National Center for Transit Research, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.