Wardhono, Agus, and Mukhlis Purnama Hadi. “AN ANALYSIS OF BARACK OBAMA’S SPEECH ACT OVER THE CONFLICT IN SYRIA AND LOOMING FEDERAL GOVERNMENT SHUTDOWN”. DIDAKTIKA : Jurnal Pemikiran Pendidikan, vol. 21, no. 2, Nov. 2017, pp. 162-74, https://journal.umg.ac.id/index.php/didaktika/article/view/122.