Hasian Romadon Tanjung, Harris Effendi Thahar and Abdurahman 2024. Development Of Teaching Materials For Indonesian Language Courses Based On National Character Using A Cooperative Learning Model. Educational Administration: Theory and Practice. 30, 1 (Jan. 2024), 404–412. DOI:https://doi.org/10.53555/kuey.v30i1.2095.