Sasilak Rodphotong. 2008. A study of language needs and problems in English communication skills : a case of Bangkok Alloy Enterprise Co., Ltd. Field of Study English, Naresuan University;
Sasilak Rodphotong. (2008) A study of language needs and problems in English communication skills : a case of Bangkok Alloy Enterprise Co., Ltd. . Naresuan University/Phitsanulok.
Sasilak Rodphotong. A study of language needs and problems in English communication skills : a case of Bangkok Alloy Enterprise Co., Ltd. . Phitsanulok:Naresuan University, 2008.
Sasilak Rodphotong. (2008) A study of language needs and problems in English communication skills : a case of Bangkok Alloy Enterprise Co., Ltd. . Naresuan University/Phitsanulok.