Siswanto, Deny Hadi, and Andriyani. “Analysis of the Need for Flip Worksheets Matrix PBL Models to Stimulate Critical Thinking Abilities”. Pelita : Jurnal Penelitian dan Karya Ilmiah 24, no. 1 (August 22, 2024): 91–99. Accessed October 7, 2024. https://ejournal.unis.ac.id/index.php/pelita/article/view/4781.