Rusnanda R, Safwandi S. Improvement of Mathematical Problem Solving Ability Through Problem Based Learning Model In Applied Mathematics Course II In Industrial Engineering Program of Polytechnic of South Aceh. JI [Internet]. 2018Jul.2 [cited 2026Apr.17];3(1):40-2. Available from: https://inotera.poltas.ac.id/index.php/inotera/article/view/47