APA (7th ed.) Citation

Lawlor, S. C. (1994). Computer information systems (3rd ed.). The Dryden Press.

Chicago Style (17th ed.) Citation

Lawlor, Steven C. Computer Information Systems. 3rd ed. Fort Worth, Tex.: The Dryden Press, 1994.

MLA (9th ed.) Citation

Lawlor, Steven C. Computer Information Systems. 3rd ed. The Dryden Press, 1994.