Subarjo, Abdul Haris, Nurcahyani Dewi Retnowati, and Himawan Putranta. 2025. “Development of QR Code Based Archipelago Insight Media to Improve Students’ Conceptual Understanding”. Jurnal Lemhannas RI 13 (4), 577-91. https://doi.org/10.55960/jlri.v13i4.1185.