ISBN 0-7377-2428-5. ↑ (Reference to come) ↑ Head High Fact Sheet 1 Archived August 23, 2011, at the Wayback Machine. ↑ "Teen suicide: What parents need to know - Mayo Clinic". www.mayoclinic.org. Retrieved 2016-10-26. ↑ WASSERMAN, DANUTA; CHENG, QI; JIANG, GUO-XIN (June 2005).