APA (7th ed.) Citation

Hellyer, H. W. (1970). How to choose and use tape recorders (1. publ.). Fountain Press.

Chicago Style (17th ed.) Citation

Hellyer, Henry William. How to Choose and Use Tape Recorders. 1. publ. London: Fountain Press, 1970.

MLA (9th ed.) Citation

Hellyer, Henry William. How to Choose and Use Tape Recorders. 1. publ. Fountain Press, 1970.

Warning: These citations may not always be 100% accurate.