Written by auditors, each with a multitude of real-world experience, this is not a book that deals with theories and principles as they exist on library shelves. New to this edition is the expanded coverage on ethics, the correlation of auditing to business performance, and the expansion into areas not covered by the Certified Quality Auditor Body of Knowledge. This single resource is designed for auditors, audit managers, audit teams, and quality assurance professionals to use as the definitive resource for nearly every aspect of the auditing function.