Supriyono, Yusup, Yuyus Saputra, and Nita Sari Narulita Dewi. 2020. “English Immersion Program in EFL Setting: A Modified Model, Implementation, and Effectiveness”. JEELS (Journal of English Education and Linguistics Studies) 7 (1):137-60. https://doi.org/10.30762/jeels.v7i1.1767.