Subiyanto, P. ., and L. N. C. . Handayani. “Self-Confidence Versus English Competence”. Prosiding Seminar Nasional Riset Bahasa Dan Pengajaran Bahasa, vol. 4, no. 1, Dec. 2022, pp. 99-103, https://ojs2.pnb.ac.id/index.php/SENARILIP/article/view/859.