Arifin, Ilfiana Firzaq, Akhmad Arif Musaddad, and Sudiyanto Sudiyanto. “PBL (Problem Based Learning) Model Based on Constructivist Sosioculturalism: Theory and Concept of The Millennial Era of Learning Model”. Yupa: Historical Studies Journal 2, no. 2 (December 31, 2018): 115-125. Accessed May 2, 2024. https://jurnal.fkip.unmul.ac.id/index.php/yupa/article/view/122.