APA (7th ed.) Citation

Porter, B., Hatherly, D., & Simon, J. (2003). Principles of external auditing (2nd ed.). John Wiley.

Chicago Style (17th ed.) Citation

Porter, Brenda, David Hatherly, and Jon Simon. Principles of External Auditing. 2nd ed. England: John Wiley, 2003.

MLA (9th ed.) Citation

Porter, Brenda, et al. Principles of External Auditing. 2nd ed. John Wiley, 2003.