Não informado. (2004). American Engineer: The railway mechanical monthly. Simmons Boardman Publishing.
Chicago-referens (17:e uppl.)Não informado. American Engineer: The Railway Mechanical Monthly. New York: Simmons Boardman Publishing, 2004.
MLA-referens (8:e uppl.)Não informado. American Engineer: The Railway Mechanical Monthly. Simmons Boardman Publishing, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.