Não informado. (2004). Railway Mechanical Engineer. Simmons Boardman Publishing.
Chicago (17e ed.) BronvermeldingNão informado. Railway Mechanical Engineer. Philadelphia, Pa: Simmons Boardman Publishing, 2004.
MLA (8e ed.) BronvermeldingNão informado. Railway Mechanical Engineer. Simmons Boardman Publishing, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.