Nazaruddin, I. ., and P. . Rahmawati. “Development of Innovative Student Worksheets Based on Project-Based Learning: Improve the Learning Outcomes”. Jurnal Inovasi Pendidikan Dasar, vol. 6, no. 1, June 2021, pp. 31-38, https://jipd.uhamka.ac.id/index.php/jipd/article/view/152.