... chapter of The Essential Handbook takes the reader through the structure of the bookand highlights the pivotal role of the IIA standards. We have also provided a brief snapshot of the development of ... 128Reference 131 6 Professionalism 133Introduction 133 6. 1 Audit Professionalism 133 6. 2 Internal Auditing Standards 134 6. 3 Due Professional Care 143 6. 4 Professional Consulting Services 143 6. 5 The Quality ... Dittenhofer, Mortimer A., Assisted by Scheiner James H. (19 96) Sawyer’s Internal Auditing, 4th edition, Florida: The Institute of Internal Auditors, p. 8.12 THE ESSENTIAL HANDBOOK OF INTERNAL AUDITING ManagersSupervisorsOperational...