APA (7th ed.) Citation

Townsend, J. S. E. S. (1951). Electromagnetic waves. Hutchinson's Scientific and Technical Publications.

Chicago Style (17th ed.) Citation

Townsend, John Sealy Edward Sir. Electromagnetic Waves. London, New York: Hutchinson's Scientific and Technical Publications, 1951.

MLA (9th ed.) Citation

Townsend, John Sealy Edward Sir. Electromagnetic Waves. Hutchinson's Scientific and Technical Publications, 1951.