Tri Al Ansori, Fajar Fina Alawiyah, and Joy Nashar Utamajaya, S.Kom, M.M.S.I. “Application of Web-Based Learning Information Systems Case Study SMPN 3 PPU”. International Journal of Progressive Research in Science and Engineering, vol. 2, no. 9, Sept. 2021, pp. 115-7, https://journal.ijprse.com/index.php/ijprse/article/view/434.