APA (7th ed.) Citation

Walsh, B. C. (1986). Computer users' data book. Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Walsh, Brian C. Computer Users' Data Book. Oxford [Oxfordshire] ; Boston: Blackwell Scientific Publications, 1986.

MLA (9th ed.) Citation

Walsh, Brian C. Computer Users' Data Book. Blackwell Scientific Publications, 1986.