Não informado. Transportation: Current literature. U.S. Department of Transportation.
Chicago (17e ed.) BronvermeldingNão informado. Transportation: Current Literature. Washington: U.S. Department of Transportation.
MLA (8e ed.) BronvermeldingNão informado. Transportation: Current Literature. U.S. Department of Transportation.
Let op: Deze citaties zijn niet altijd 100% accuraat.