Joko Suprayitno, Iswahyudi, and Abdul Aziz. 2026. “Calculus Problem Solving: A Review of Krulick and Rudnick’s Theory for First Year Engineering Students”. Education, Science, and Technology International Conference 3 (1):367-75. https://jurnalnew.unimus.ac.id/index.php/edusciencetech/article/view/1057.