Não informado. (1960). Analyzer. Beckman Instruments, Scientific and Progress Instruments Division.
Chicago (17e ed.) BronvermeldingNão informado. Analyzer. Fullerton, Calif: Beckman Instruments, Scientific and Progress Instruments Division, 1960.
MLA (8e ed.) BronvermeldingNão informado. Analyzer. Beckman Instruments, Scientific and Progress Instruments Division, 1960.
Let op: Deze citaties zijn niet altijd 100% accuraat.