©2013 National Research Council of Thailand
Amphorn Busapapong. 2008. Vocational students' problems in learning English at Chumphon College of Agriculture and Technology. , Thammasat University;
Amphorn Busapapong. (2008) Vocational students' problems in learning English at Chumphon College of Agriculture and Technology . Thammasat University/Bangkok.
Amphorn Busapapong. Vocational students' problems in learning English at Chumphon College of Agriculture and Technology. . Bangkok:Thammasat University, 2008.
Amphorn Busapapong. (2008) Vocational students' problems in learning English at Chumphon College of Agriculture and Technology . Thammasat University/Bangkok.