Angthong Bunserm, Songkoon Chantachon and Worapol Aengwanich
The Social Sciences 3 ( 1 ): 37 - 40 , 2008
Terdchai Panthachai, Songkoon Chantachon and Worapol Aengwanich
The Social Sciences 3 ( 2 ): 157 - 163 , 2008
Pranorm Kiantong, Watee Kongbuntad and Worapol Aengwanich
The Social Sciences 3 ( 3 ): 211 - 215 , 2008