Não informado. (1960). Analyzer. Beckman Instruments, Scientific and Progress Instruments Division.
Cita Chicago Style (17a ed.)Não informado. Analyzer. Fullerton, Calif: Beckman Instruments, Scientific and Progress Instruments Division, 1960.
Cita MLA (8a ed.)Não informado. Analyzer. Beckman Instruments, Scientific and Progress Instruments Division, 1960.
Precaución: Estas citas no son 100% exactas.