Tagg, G. F. (1974). Electrical indicating instruments. Butterworth.
Cita Chicago (17th ed.)Tagg, G. F. Electrical Indicating Instruments. London: Butterworth, 1974.
Cita MLA (8th ed.)Tagg, G. F. Electrical Indicating Instruments. Butterworth, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.