“Representation of Moral Values in the When English Rings a Bell Textbook for Eighth-Grade Students” (2026) Isen Mulang: Journal of Education and Learning, 1(1), hlm. 21–30. Tersedia pada: https://abecen.com/index.php/Isen-Mulang/article/view/25 (Diakses: 13 Juni 2026).