APA (7th ed.) Citation

Chatterton, D. J. (1972). Which microphone? Print and Press Services Ltd.

Chicago Style (17th ed.) Citation

Chatterton, Derek J. Which Microphone? Barnet (7 Alverstone Ave., Barnet, Herts. EN4 8DP): Print and Press Services Ltd, 1972.

MLA (8th ed.) Citation

Chatterton, Derek J. Which Microphone? Print and Press Services Ltd, 1972.