APA (7th ed.) Citation

Walker, D. W. (1988). Computer based information systems: An introduction. Pergamon.

Chicago Style (17th ed.) Citation

Walker, D. W. Computer Based Information Systems: An Introduction. Sydney [etc.]: Pergamon, 1988.

MLA (9th ed.) Citation

Walker, D. W. Computer Based Information Systems: An Introduction. Pergamon, 1988.

Warning: These citations may not always be 100% accurate.