The Centers for Disease Control and Prevention: http://www.cdc.gov/ViolencePrevention/suicide/index.html
Massachusetts Department of Public Health: http://www.mass.gov/dph/suicideprevention
The Society for Prevention of Teen Suicide: http://www.sptsusa.org/
Suicide Prevention for Teens and Young Adults: https://acerahealth.com/suicide-prevention-for-teens-and-young-adults/