Não informado. (2004). Railway Mechanical Engineer. Simmons Boardman Publishing.
Chicago-referens (17:e uppl.)Não informado. Railway Mechanical Engineer. Philadelphia, Pa: Simmons Boardman Publishing, 2004.
MLA-referens (8:e uppl.)Não informado. Railway Mechanical Engineer. Simmons Boardman Publishing, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.