Pusparini, Ayu, Djatmika Djatmika, and Riyadi Santosa. 2018. Indonesian EFL Journal: Journal of ELT, Linguistics, and Literature 4 (1), 56-72. Accessed June 24, 2019. http://ejournal.kopertais4.or.id/mataraman/index.php/efi/article/view/3472.