Thidawan Amjang
Department of Industrial Business and Human Resource Development, Faculty of Business and Industrial Development, King Mongkut’s University of Technology North Bangkok
Thailand

Suwattana Thepchit
Social Science Department, Faculty of Applied Arts, King Mongkut’s University of Technology North Bangkok
Thailand

Siraprapa Manomat
Applied Statistics Department, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok
Thailand