1. University of Siena, Siena, Italy
2. Indipendent Scholar
3. Teachers College, Columbia University, New York, NY, USA
4. Wentworth Institute of Technology, Boston, MA, USA
5. St Catherine University, Saint Paul, MN, USA
6. Universidade Presbiteriana Mackenzie, Sao Paulo, Brazil
7. University of Central Oklahoma, Edmond, OK, USA
8. Georgian College, Barrie, ON, Canada