WIDYASTOETI, Y. Peningkatan Keaktifan Siswa dalam Kelompok Mata Pelajaran IPA Melalui Penilaian Antarteman DI SMPN 1 Sangatta Utara. Education Journal : Journal Educational Research and Development, [S. l.], v. 5, n. 2, p. 181–194, 2021. DOI: 10.31537/ej.v5i2.508. Disponível em: https://jurnal.unipar.ac.id/index.php/ej/article/view/508. Acesso em: 10 mar. 2025.