APA (7th ed.) Citation

Geller, D. P., & Weinberg, G. M. (1985). Computer information systems: An introduction to data processing. Little, Brown & Co.

Chicago Style (17th ed.) Citation

Geller, Dennis P., and Gerald M. Weinberg. Computer Information Systems: An Introduction to Data Processing. Boston: Little, Brown & Co, 1985.

MLA (9th ed.) Citation

Geller, Dennis P., and Gerald M. Weinberg. Computer Information Systems: An Introduction to Data Processing. Little, Brown & Co, 1985.