APA (7th ed.) Citation

O'Brien, J. A. (1986). Computers and information processing (2nd ed.). Richard D. Irwin.

Chicago Style (17th ed.) Citation

O'Brien, James A. Computers and Information Processing. 2nd ed. Homewood, Ill: Richard D. Irwin, 1986.

MLA (9th ed.) Citation

O'Brien, James A. Computers and Information Processing. 2nd ed. Richard D. Irwin, 1986.