Matitaputty, Christi, Toto Nusantara, Erry Hidayanto, and Sukoriyanto. “Examining the Pedagogical Content Knowledge of in-Service Mathematics Teachers on the Permutations and Combinations in the Context of Student Mistakes”. Journal on Mathematics Education 13, no. 3 (November 21, 2022): 393–414. Accessed November 22, 2024. http://jme.ejournal.unsri.ac.id/index.php/jme/article/view/233.