Lynn (Consulting, Business Advisory and Training, Overland Park, Kansas, USA) Fountain 
Ethics and the Internal Auditor”s Political Dilemma [PDF ebook] 
Tools and Techniques to Evaluate a Company’s Ethical Culture

This book helps auditors understand the reality of performing the internal audit role and the importance of properly managing ethical standards. It provides many examples of ethical conflicts and proposes alternative actions for the internal auditor. Internal auditors are well-schooled on the IIA Standards, but the reality is that the pressure placed on internal auditors related to execution of work and upholding ethical standards can be very difficult. Regardless of best practice or theory, auditors must be personally prepared to manage through issues they run across.