APA (7th ed.) Citation

Chirgwin, B. H., Plumpton, C., & Kilmister, C. W. (1971). Elementary electromagnetic theory. Pergamon Press.

Chicago Style (17th ed.) Citation

Chirgwin, Brian H., C. Plumpton, and C. W. Kilmister. Elementary Electromagnetic Theory. Oxford: Pergamon Press, 1971.

MLA (8th ed.) Citation

Chirgwin, Brian H., et al. Elementary Electromagnetic Theory. Pergamon Press, 1971.