Não informado. (1972). Civil engineering technician. Institution of Civil Engineers.
Chicago (17e ed.) BronvermeldingNão informado. Civil Engineering Technician. London: Institution of Civil Engineers, 1972.
MLA (8e ed.) BronvermeldingNão informado. Civil Engineering Technician. Institution of Civil Engineers, 1972.
Let op: Deze citaties zijn niet altijd 100% accuraat.