standards, conventions, and rules accountants follow in recording and summarizing transactions, and in the preparation of financial statements. GAAP derive, in order of importance, from: (1) issuances from an authoritative body designated by the AICPA Council (for example, the FASB Statements, AICPAAPB Opinions, and AICPA Accounting Research Bulletins); (2) other AICPA issuances such as AICPA Industry Guides; (3) industry practice; and (4) accounting literature in the form of books and articles. Principles also derive from tradition, such as the concept of matching. In the audit report, the CPA must indicate that the client has followed GAAP on a consistent basis.