SITUMORANG, Hannah; REMIGIUS, Antonius; LUMBAN GAOL, Rumiris; SILABAN, Patri. PENGARUH REWARD DAN PUNISHMENT TERHADAP HASIL BELAJAR MATEMATIKA SISWA KELAS III SD HKBP . Jurnal Educatio FKIP UNMA, [S. l.], v. 6, n. 2, p. 278–281, 2020. DOI: 10.31949/educatio.v6i2.442. Disponível em: https://www.ejournal.unma.ac.id/index.php/educatio/article/view/442. Acesso em: 1 may. 2025.