Não informado. (1970). Systems, computers, controls. Scripta Publishing.
Chicago (17e ed.) BronvermeldingNão informado. Systems, Computers, Controls. Washington: Scripta Publishing, 1970.
MLA (8e ed.) BronvermeldingNão informado. Systems, Computers, Controls. Scripta Publishing, 1970.
Let op: Deze citaties zijn niet altijd 100% accuraat.