Sutat Khankaew. 2010. An analysis of the language style used in selected barack obama’s speeches. , Chiangrai Rajabhat University;
Sutat Khankaew. (2010) An analysis of the language style used in selected barack obama’s speeches . Chiangrai Rajabhat University/Chiangrai province.
Sutat Khankaew. An analysis of the language style used in selected barack obama’s speeches. . Chiangrai province:Chiangrai Rajabhat University, 2010.
Sutat Khankaew. (2010) An analysis of the language style used in selected barack obama’s speeches . Chiangrai Rajabhat University/Chiangrai province.