Pinandito, A., D. D. Prasetya, H. M. Az-zahra, W. S. Wardhono, Y. Hayashi, and T. Hirashima. “Design and Development of Online Collaborative Learning Platform of Kit-Build Concept Map”. Journal of Information Technology and Computer Science, vol. 6, no. 1, Apr. 2021, pp. 50-65, doi:10.25126/jitecs.202161294.