PRATIWI SUCI TRIADI, A. . Effectivity of Information Services in Preventing Bullying at MTs Madinatussalam, Percut Sei Tuan District, Deli Serdang Regency. International Journal Of Education, Social Studies, And Management (IJESSM), [S. l.], v. 1, n. 3, p. 34–44, 2021. DOI: 10.52121/ijessm.v1i1.17. Disponível em: https://lpppipublishing.com/index.php/ijessm/article/view/17. Acesso em: 22 nov. 2024.