APA (7th ed.) Citation

Chandor, Graham, & Williamson. (1977). The Penguin dictionary of computers (2nd ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Chandor, Graham, and Williamson. The Penguin Dictionary of Computers. 2nd ed. UK: Penguin Books, 1977.

MLA (8th ed.) Citation

Chandor, et al. The Penguin Dictionary of Computers. 2nd ed. Penguin Books, 1977.