Rum, Ahbi Mahdianing. “Students’ Errors in Solving PISA-Based Mathematical Problems Viewed from Cognitive Style”. Kognitif: Jurnal Riset HOTS Pendidikan Matematika 5, no. 4 (October 26, 2025): 1471–1482. Accessed January 9, 2026. https://etdci.org/journal/kognitif/article/view/3690.