Wiyartiningtyas, Lintang Pramusita, and Destriana Kurniawati. “Analysis of The Internal Quality Assurance System at Pangudi Luhur Bintang Laut Surakarta Middle School”. Indonesian Journal of Learning and Instructional Innovation, vol. 3, no. 01, June 2025, pp. 1-8, https://doi.org/10.20961/ijolii.v3i01.1634.