1. WHO. 2018. Ageing and Health. World Health Organization, Geneva.
2. Chapman, D., & Perry, G. Depression as major component of public health for older adults. Preventive Chronic Diseases, 2008;5, A22. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2248771/ at: 19/10/14
3. Sayied, N. E., Mohamed, H. S., Thabet, R. A. Feeling of depression and loneliness among elderly people attending geriatric clubs at Assiut City. Life Science Journal, 2012;9(2), 140–145.
4. Fiske, A., Loebach, J., Wetherell, & Gatz, M. Depression in older adults. The Annual Review of Clinical Psychology, 2009;5, 363–589.
5. Arslantas, D., Alaettin, Ü., Demet, O. Prevalence of depression and associated risk factors among the elderly in Middle Anatolia, Turkey. Geriatrics Gerontology International, 2014; 14,100–108