Prof. Lorenzo Cantoni, Ph.D.

   Università della Svizzera Italiana, Switzerland

   Prof. Theodore Benetatos

   IMI University Centre Luzern, Switzerland

   Prof. Zhang Xianchun

   Guilin Tourism University, People's Republic of China

   Prof. Datuk Seri Dr. Victor Wee Eng Lye

   Taylor's University,  Malaysia

   Prof. Stephen Boyle

   James Cook University, Australia

   Assc. Prof. Dr. Sakchai Setarnawat, Ph.D.

   Burapha University, Thailand

   Prof. Dr. Ade Gafar Abdullah

   Universitas Pendidikan Indonesia, Indonesia

   Halimin Herjanto, PhD

   University of the Incarnate Word San Antonio,

   Texas, United States of America