Sarthit Krittaluck, Decha Karnjanangkura and Subunn Leamvijarn
The Social Sciences 4 ( 1 ): 76 - 80 , 2009
Sastra Laoakka, Decha Karnjanangkura and Nuchida Suwapeat
The Social Sciences 4 ( 2 ): 203 - 206 , 2009