APA (7th ed.) Citation

Donce, H. E., Savage, S. E. G., & Ghey, G. (1937). Alternating currents. John Murray.

Chicago Style (17th ed.) Citation

Donce, H. E., Sir E. G. Savage, and G. Ghey. Alternating Currents. London: John Murray, 1937.

MLA (9th ed.) Citation

Donce, H. E., et al. Alternating Currents. John Murray, 1937.