Aulia, Sefindi, Iin Baroroh Ma’arif, Yuyun Bahtiar, Hanifah Hanifah, and A. Kanzul Fikri. 2025. “The The Effectiveness of Duolingo in Speaking Skill at Al-Ikhlas Islamic Boarding School”. SCHOOLAR: Social and Literature Study in Education 5 (1):52-59. https://ejournal.unwaha.ac.id/index.php/jurnal_pengabdian/article/view/6047.