General (US), Office of the Surgeon; Prevention (US), National Action Alliance for Suicide (2012-09). Introduction (dalam bahasa Inggris). US Department of Health & Human Services (US).Periksa nilai tanggal di: |date= (bantuan)
nimh.nih.gov
"Suicide Prevention". National Institute of Mental Health (NIMH) (dalam bahasa Inggris). Diakses tanggal 2022-03-15.