APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Porter, Brenda, Jon Simon, and David J. Hatherly. Principles of External Auditing. 2nd ed. Chichester ; West Sussex, England: John Wiley & Sons, 2003.

MLA (9th ed.) Citation

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