1. A. Bjorn, Business Process Improvement Toolbox (Moscow: ASQ Quality Press, 2006)
2. J. Champy, Reengineering the Corporation: A Manifesto for Business Revolution (London: Collins, 2006)
3. P. Harmon, Business Process Change, Second Edition: A Guide for Business Managers and BPM and Six Sigma Professionals (Burlington: Morgan Kaufmann, 2005)
4. H. J. Harrington, Business Process Improvement Workbook (New York: McGraw-Hill, 2007)
5. H. J. Harrington, Business Process Improvement: The Breakthrough Strategy for Total Quality, Productivity, and Competitiveness (New York: McGraw-Hill, 1991)