Hadi Siswanto D, Alghiffari EK, Setiawan A. Analysis of Electronic Student Worksheets Matrix Requirements Using a PBL Flipbook Model to Stimulate Critical Thinking Skills. AJATeL [Internet]. 2024 Apr. 16 [cited 2024 Nov. 22];14(1):36-44. Available from: https://ejournal.upsi.edu.my/index.php/AJATeL/article/view/9057