Rusmini, R., M. R. Mazali, F. S. W. Harahap, and E. Astuti. “The Peer Tutor Model With Cognitive Conflict Strategies in Collaborative Learning Mathematical Problem Solving and Its Effect on Individual Achievement.”. Ideguru: Jurnal Karya Ilmiah Guru, Vol. 9, no. 2, Jan. 2024, pp. 719-25, doi:10.51169/ideguru.v9i2.891.