APA (7th ed.) Citation

March, I., Greenfield, E., & Layton, R. (1994). The Penguin guide to compact discs and cassettes. Penguin books.

Chicago Style (17th ed.) Citation

March, Ivan, Edward Greenfield, and Robert Layton. The Penguin Guide to Compact Discs and Cassettes. London: Penguin books, 1994.

MLA (9th ed.) Citation

March, Ivan, et al. The Penguin Guide to Compact Discs and Cassettes. Penguin books, 1994.