ARIFIN, I. F.; MUSADDAD, A. A.; SUDIYANTO, S. PBL (Problem Based Learning) Model Based on Constructivist Sosioculturalism: Theory and Concept of The Millennial Era of Learning Model. Yupa: Historical Studies Journal, [S. l.], v. 2, n. 2, p. 115–125, 2018. DOI: 10.30872/yupa.v2i2.122. Disponível em: https://jurnal.fkip.unmul.ac.id/index.php/yupa/article/view/122. Acesso em: 5 apr. 2025.