1. Goldsmith, M. (2009). Coaching for behavioral change. Leadership Is a Contact Sport http://www.marshallgoldsmithlibrary.com/docs/articles/LeaderContactSport.pdf

2. Goldsmith, M. (2009). Coaching for behavioral change. Leaders Make Values Visible http://www.marshallgoldsmithlibrary.com/cim/articles_print.php?aid=259

3. Applied Behavior Analysis (2nd Edition) 2nd Edition by John O. Cooper , Timothy E. Heron , William L. Heward 

4. Excellence in Supervision: Essential Skills for the New Supervisor Rick Conlow Crisp Learning, 2001 - Business & Economics 

5. Robbins, S.P.,  Judge, T.A., (2014). Essentials of Organizational Behavior. 12th edition.  Upper Saddle River, NJ:  Pearson Education, Inc. 

6. Pentland, A.S.  (2012).  The New Science of Building Great Teams.  Harvard Business Review.  Retrieved September 3, 2015, from Harvard Business Publishing.  

7. Daniels, A.C., Baily, J.S.  (2014).  Performance Management:  Changing Behavior That Drives Organizational Effectiveness.  www.aubreydaniels.com 

8. https://www.americanprogress.org/wp-content/uploads/2012/11/CostofTurnover.pdf