HASNADELNI, H. Peningkatan Aktivitas Siswa Menjaga Kebersihan Lingkungan Sekolah Melalui Kegiatan Sekolah Bersih . Jurnal PGSD, [S. l.], v. 9, n. 2, p. 32–40, 2023. DOI: 10.32534/jps.v9i2.4940. Disponível em: https://e-journal.umc.ac.id/index.php/JPS/article/view/4940. Acesso em: 3 jul. 2024.