APA (7th ed.) Citation

O'BRIEN, J. A. (1986). Computers and information processing: With software tu-torial and basic.-- Ed.2. Richard D. Irwin.

Chicago Style (17th ed.) Citation

O'BRIEN, James A. Computers and Information Processing: With Software Tu-torial and Basic.-- Ed.2. Illinois: Richard D. Irwin, 1986.

MLA (9th ed.) Citation

O'BRIEN, James A. Computers and Information Processing: With Software Tu-torial and Basic.-- Ed.2. Richard D. Irwin, 1986.