Li, Li, and Haiming Tang. “The Dynamic Mathematics Software for Teaching Variance”. Edumatika : Jurnal Riset Pendidikan Matematika 3, no. 2 (November 1, 2020): 136–146. Accessed March 29, 2024. https://ejournal.iainkerinci.ac.id/index.php/edumatika/article/view/629.