Mom Junction. https://www.momjunction.com/articles/ways-to-stop-school-violence_00348545/
Diakses pada 18 Februari 2021PTA. https://www.pta.org/home/family-resources/safety/School-Safety/Checklist-to-Help-Prevent-Violence-in-Schools
Diakses pada 18 Februari 2021CDC. https://www.cdc.gov/violenceprevention/youthviolence/schoolviolence/fastfact.html
Diakses pada 18 Februari 2021