Lestari, Desma Ayuni, Melda Yeni, and Sri Erma Purwanti. “STUDENTS’ SELF EFFICACY IN SPEAKING ENGLISH”. J-SHELVES OF INDRAGIRI (JSI) 2, no. 1 (November 30, 2020): 14-19. Accessed May 6, 2021. https://ejournal.unisi.ac.id/index.php/shelves/article/view/1478.