Watcharin Saenrungmueang, Kitti Srisa-ard and Virat Pansila
The Social Sciences 4 ( 1 ): 65 - 70 , 2009
Supisara Prasert, Virat Pansila and On-Uma Lasunon
The Social Sciences 4 ( 2 ): 174 - 179 , 2009