APA (7th ed.) Citation

Bell, D., Morrey, I., & Pugh, J. R. (1997). The essence of program design. Prentice Hall.

Chicago Style (17th ed.) Citation

Bell, Doug, Ian Morrey, and John R. Pugh. The Essence of Program Design. Harlow: Prentice Hall, 1997.

MLA (9th ed.) Citation

Bell, Doug, et al. The Essence of Program Design. Prentice Hall, 1997.