Syafii, Muhammad Lukman, Ghulam Asrofi Buntoro, Alip Sugianto, Nurohman ., and Sutanto . 2022. “A Conceptual Model of Culture-Based English Learning Materials in Indonesia”. International Journal of Learning, Teaching and Educational Research 21 (10):50-63. https://ijlter.net/index.php/ijlter/article/view/1430.