Chusaini, Muhammad Hafid. “Exploring the Sources of Self-Efficacy Perceived by High-Achieving Students in Speaking Performance”. Arus Jurnal Psikologi dan Pendidikan 5, no. 2 (June 25, 2026): 1524–1543. Accessed November 9, 2026. https://www.jurnal.ardenjaya.com/index.php/ajpp/article/view/2848.