Himmawati, Aulia, and Donny Khoirul Azis. “Implementation of Product Differentiation Strategy in Social Studies Lessons on Economic Activities for Fourth Grade Students at MI Miftahul Athfal Kebarongan”. Interdisciplinary Journal of Social Science and Education (IJSSE) 4, no. 1 (January 8, 2026): 19–38. Accessed May 16, 2026. https://aisrr-ijsse.net/index.php/jsse/article/view/116.