Shida, Nurul, Abdul Halim Abdullah, Sharifah Osman, and Norulhuda Ismail. 2024. “Validation of Mathematics Test to Assess Polytechnic Students’ Problem Solving”. Jurnal Pendidikan Matematika 17 (2):265-78. https://jpm.ejournal.unsri.ac.id/index.php/jpm/article/view/175.