APA (7th ed.) Citation

Westcott, C. G. (1956). Tape recorders, how they work. H.W. Sams.

Chicago Style (17th ed.) Citation

Westcott, Charles G. Tape Recorders, How They Work. Indianapolis: H.W. Sams, 1956.

MLA (9th ed.) Citation

Westcott, Charles G. Tape Recorders, How They Work. H.W. Sams, 1956.