APA (7th ed.) Citation

Lawlor, S. C. (1990). Computer information systems (2nd ed.). Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Lawlor, Steven C. Computer Information Systems. 2nd ed. San Diego: Harcourt Brace Jovanovich, 1990.

MLA (9th ed.) Citation

Lawlor, Steven C. Computer Information Systems. 2nd ed. Harcourt Brace Jovanovich, 1990.