Chanya Yangmongkol. 2009. Persuasive language used in President Barack Obama's speechesChanya Yangmongkol. Faculty of Humanities, Ramkhamhaeng University;
Chanya Yangmongkol. (2009) Persuasive language used in President Barack Obama's speechesChanya Yangmongkol . Ramkhamhaeng University/Bangkok.
Chanya Yangmongkol. Persuasive language used in President Barack Obama's speechesChanya Yangmongkol. . Bangkok:Ramkhamhaeng University, 2009.
Chanya Yangmongkol. (2009) Persuasive language used in President Barack Obama's speechesChanya Yangmongkol . Ramkhamhaeng University/Bangkok.