Winardy, E. S., Marlina, and Hasniati. “WEB-BASED INFORMATION SYSTEMS FOR LEARNING AND TEACHING MONITORING IN GAMALIEL CHRISTIAN HIGH SCHOOL”. JTRISTE, Vol. 4, no. 1, Mar. 2017, p. 34~46, https://jurnal.kharisma.ac.id/jtriste/article/view/6.