“The The Effectiveness of Duolingo in Speaking Skill at Al-Ikhlas Islamic Boarding School”, Schoolar, vol. 5, no. 1, pp. 52–59, Jun. 2025, Accessed: May 30, 2026. [Online]. Available: https://ejournal.unwaha.ac.id/index.php/jurnal_pengabdian/article/view/6047