Dharma S, Hodriani H, Halking H, Nababan R. Eco-Literacy Citizenship Education Materials Based on Cultural Value: Research and Development Study at Universitas Negeri Medan. Rand. Inter. Edu. Ling. Sci. J. [Internet]. 2022Sep.30 [cited 2026May30];3(3):537-44. Available from: https://www.randwickresearch.com/index.php/rielsj/article/view/542