APA (7th ed.) Citation

Porter, W. T., & Perry, W. E. (1984). EDP, controls and auditing (4th ed.). Kent.

Chicago Style (17th ed.) Citation

Porter, W. Thomas, and William E. Perry. EDP, Controls and Auditing. 4th ed. Boston, Mass.: Kent, 1984.

MLA (9th ed.) Citation

Porter, W. Thomas, and William E. Perry. EDP, Controls and Auditing. 4th ed. Kent, 1984.