Não informado. (1928). Instruments: The magazine of measurement and control. Instruments Publishing.
Chicago (17e ed.) BronvermeldingNão informado. Instruments: The Magazine of Measurement and Control. Pontiac, Ill: Instruments Publishing, 1928.
MLA (8e ed.) BronvermeldingNão informado. Instruments: The Magazine of Measurement and Control. Instruments Publishing, 1928.
Let op: Deze citaties zijn niet altijd 100% accuraat.