1. Suicide;Weis,1974
2. Suicide;Demirel;Anatol J Psychiatry,2003
3. Suicide prevention (SUPRE). Suicide preventation and special programmes, Mental health, Programmes and projects, World Health Organization. http://www.who.int/mental_health/prevention/suicide/suicideprevent/en/index.html. Accessed: 21 October 2013.
4. Suicidal behavior in elders;Yeates;Psychiatr Clin N Am,2008
5. Definition of an older or elderly person: Proposed Working Definition of an Older Person in Africa for the MDS Project. Health statistics and information systems. World Health Organization. http://www.who.int/healthinfo/survey/ageingdefnolder/en. Accessed: 21 October 2014.