The Effect Of Health Education On Bullying Knowledge Among Primary School Student. JURNAL PROTEKSI KESEHATAN, [S. l.], v. 8, n. 2, p. 28–34, 2019. DOI: 10.36929/jpk.v8i2.161. Disponível em: https://jurnal.pkr.ac.id/JPK/article/view/161. Acesso em: 18 jan. 2026.