Frisnoiry, Suci, Tiur Malasari Siregar, and Sri Lestari Manurung. “Mathematics Book Innovation Based on Digital Literature”. Journal of Education, Health and Sport 12, no. 9 (September 1, 2022): 288–296. Accessed November 23, 2024. https://apcz.umk.pl/JEHS/article/view/39447.