MURTIASTUTI, Kun. Efektivitas Group Investigation terhadap Kemandirian, Penalaran, dan Self-efficacy Matematika Peserta Didik. Journal of Education Research, [S. l.], v. 5, n. 4, p. 6266–6271, 2024. DOI: 10.37985/jer.v5i4.1952. Disponível em: https://jer.or.id/index.php/jer/article/view/1952. Acesso em: 5 aug. 2025.