APA (7th ed.) Citation

Porter, W. T., & Perry, W. E. (1988). EDP: Controls and auditing (5. ed., 2. print.). PWS-Kent.

Chicago Style (17th ed.) Citation

Porter, Walter Thomas, and William E. Perry. EDP: Controls and Auditing. 5. ed., 2. print. Boston, Mass: PWS-Kent, 1988.

MLA (9th ed.) Citation

Porter, Walter Thomas, and William E. Perry. EDP: Controls and Auditing. 5. ed., 2. print. PWS-Kent, 1988.