APA (7th ed.) Citation

Greenfield, E., Layton, R., & March, I. (1979). The Penguin cassette guide (1st publ.). Penguin Books.

Chicago Style (17th ed.) Citation

Greenfield, Edward, Robert Layton, and Ivan March. The Penguin Cassette Guide. 1st publ. Harmondsworth [u.a.]: Penguin Books, 1979.

MLA (9th ed.) Citation

Greenfield, Edward, et al. The Penguin Cassette Guide. 1st publ. Penguin Books, 1979.