Yorlanda, F. ., and M. F. F. . Abbas. “The Use of HelloTalk Application in Teaching Speaking”. Proceeding of International Conference on Language Pedagogy (ICOLP), vol. 2, no. 1, Dec. 2022, pp. 131-7, https://proceeding-icolp.fbs.unp.ac.id/index.php/icolp/article/view/80.