The third edition is thoroughly revised to take into account the new Companies Ordinance (Chapter 622, effective 2014) and Hong Kong Standards on Quality Control, Auditing, Assurance and Related Services (updated June 2014), and numerous developments of a full range of auditing topics since the previous edition. Along with recent development of the profession and cutting-edge research findings, this book boldly draws on economic theories to explain aspects of auditing. Certain economic concepts that are applicable to all aspects of an audit are addressed for students and practitioners alike.