Wulansari RE, Nabawi RA. Efforts to improve problem solving skills and critical thinking skills through problem-based integrated Computer Assisted Instruction (CAI) in Vocational Education. JPTK [Internet]. 2021Nov.30 [cited 2024Sep.26];4(4):111-7. Available from: https://jptk.ppj.unp.ac.id/index.php/jptk/article/view/211