Absari, Dhiani Tresna, and Liliana Liliana. “The Analysis and Design of School Health Unit Information System”. Jurnal Komputer Terapan  7, no. 1 (June 1, 2021): 110–119. Accessed October 23, 2021. https://jurnal.pcr.ac.id/index.php/jkt/article/view/4479.