©2013 National Research Council of Thailand
Songyut Akkakoson. 1993. A study of the role and importance of English in Thai business communication. Bangkok:Mahidol University;
Songyut Akkakoson. (1993) A study of the role and importance of English in Thai business communication (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Songyut Akkakoson. A study of the role and importance of English in Thai business communication. Bangkok:Mahidol University, 1993.
Songyut Akkakoson. (1993) A study of the role and importance of English in Thai business communication (รายงานผลงานวิจัย). Mahidol University:Bangkok.