Wardani, N. A., S. Saefurrohman, and E. S. Balinas. “Gamified Flipped Classroom for Teaching EFL Productive Skills: Exploring Teachers’ Practices and Challenges in an Islamic University”. Register Journal, vol. 18, no. 2, Dec. 2025, pp. 286-18, doi:10.18326/register.v18i2.286-318.