Raihan Ramadhan, Muhammad Alief, et al. “Integrating Pedagogical Principles into Digital Language Learning: A Conceptual Review of E-Books and Educational Applications in EFL Contexts”. Jurnal Pendidikan Dan Sastra Inggris, vol. 5, no. 3, Nov. 2025, pp. 317-26, doi:10.55606/jupensi.v5i3.6196.