Haikal, M. N. (2016). The External Factors of Students’ Involvement in Speaking Activity at SMP Progresif Bumi Shalawat. Indonesian EFL Journal: Journal of ELT, Linguistics, and Literature, 2(1), 81-91. Retrieved from https://ejournal.kopertais4.or.id/mataraman/index.php/efi/article/view/1928