Não informado. (2020). Modern Railroads Rail Transit. Cahners Publications Company.
Chicago-referens (17:e uppl.)Não informado. Modern Railroads Rail Transit. Chicago, Ill: Cahners Publications Company, 2020.
MLA-referens (8:e uppl.)Não informado. Modern Railroads Rail Transit. Cahners Publications Company, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.