Cita APA (7a ed.)

Cambridge Instrument Company. Cambridge electrical instrument for D.C. measurements. Cambridge Instrument C.

Cita Chicago Style (17a ed.)

Cambridge Instrument Company. Cambridge Electrical Instrument for D.C. Measurements. London: Cambridge Instrument C.

Cita MLA (9a ed.)

Cambridge Instrument Company. Cambridge Electrical Instrument for D.C. Measurements. Cambridge Instrument C.