Eeng, M. Hasby, and R. Pilu. “Application of QR Code-Based Magic Card Media to Improve Writing Skills Upright Letters Continuous for Grade II Students SDN 15 Salolo”. Celebes Journal of Language Studies, Vol. 6, no. 1, July 2026, pp. 104-19, doi:10.51629/cjls.v6i1.324.