Não informado. (1960). Analyzer. Beckman Instruments, Scientific and Progress Instruments Division.
Chicagoスタイル(17版)引用形式Não informado. Analyzer. Fullerton, Calif: Beckman Instruments, Scientific and Progress Instruments Division, 1960.
MLA(8版)引用形式Não informado. Analyzer. Beckman Instruments, Scientific and Progress Instruments Division, 1960.
警告: この引用は必ずしも正確ではありません.