Wardani, Niasisca Agustia, Saefurrohman Saefurrohman, and Elvira S. Balinas. 2025. “Gamified Flipped Classroom for Teaching EFL Productive Skills: Exploring Teachers’ Practices and Challenges in an Islamic University”. Register Journal 18 (2):286-320. https://ejournal.uinsalatiga.ac.id/index.php/register/article/view/4938.