RAHMAYANI, Sinta; YOGICA, Relsas. LITERATURE STUDY THE EFFECT OF VARIATIONS OF THE APPLICATION OF THE PROBLEM BASED LEARNING (PBL) MODEL ON STUDENTS ’LEARNING INTEREST IN MIDDLE SCHOOLS. Universe, [S. l.], v. 2, n. 2, p. 185–191, 2021. DOI: 10.24036/universe.v2i2.86. Disponível em: http://universe.ppj.unp.ac.id/index.php/universe/article/view/86. Acesso em: 17 apr. 2026.