“Representation of Moral Values in the When English Rings a Bell Textbook for Eighth-Grade Students”, Isen Mulang, vol. 1, no. 1, hlm. 21–30, Jun 2026, Diakses: 13 Juni 2026. [Daring]. Tersedia pada: https://abecen.com/index.php/Isen-Mulang/article/view/25