King (Kış 2003). "Telephone counselling for adolescent suicide prevention: changes in suicidality and mental state from beginning to end of a counselling session". Suicide Life Threat Behav. 33 (4): 400-11. doi:10.1521/suli.33.4.400.25235. PMID14695055.
King (Kış 2003). "Telephone counselling for adolescent suicide prevention: changes in suicidality and mental state from beginning to end of a counselling session". Suicide Life Threat Behav. 33 (4): 400-11. doi:10.1521/suli.33.4.400.25235. PMID14695055.