Supriyono, Ajang, Agung Wicaksono, and Khoiriyah Khoiriyah. “Using Flipped Classroom to Teach Speaking”. Prosiding SEMDIKJAR (Seminar Nasional Pendidikan dan Pembelajaran) 5 (August 7, 2022): 1123–1136. Accessed April 26, 2024. https://proceeding.unpkediri.ac.id/index.php/semdikjar/article/view/2437.