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"State Laws Related to Bullying Among Children and Youth"(PDF). U.S. Department of Health and Human Services - Health Resources and Services Administration - Maternal and Child Health Bureau. U.S. Department of Health and Human Services. Diarkibkan daripada yang asal(PDF) pada March 4, 2011. Dicapai pada 2013-10-28.
"State Laws Related to Bullying Among Children and Youth"(PDF). U.S. Department of Health and Human Services - Health Resources and Services Administration - Maternal and Child Health Bureau. U.S. Department of Health and Human Services. Diarkibkan daripada yang asal(PDF) pada March 4, 2011. Dicapai pada 2013-10-28.