Utami, E. S. “Peningkatan Mutu Pembelajaran Matematika Melalui Cooperative Learning Model Jigsaw Di SMK Sriwijaya 2 Wangon ”. Educatif Journal of Education Research, Vol. 2, no. 4, Nov. 2021, pp. 139-42, doi:10.36654/educatif.v2i4.180.