Principles of Auditing presents auditing from the perspective of an integrated audit complying the Sarbanes Oxley Act (SOX), under the standards of the Public Companies Accounting Oversight Board. It is the first textbook completely authored after SOX, and consequently uses the integrated audit model throughout. In addition, this text also facilitates an understanding of audits of non-public companies. A primary focus is the need for auditors to understand their clients and their industries. Highlighted illustrative industries include: health care providers, retail enterprises, the automotive industry, and the land development and home building industry.