1. United Nations Department of Economic and Social Affairs Population Division. World population ageing.2015[Cited 14 Jul 2017]. Available from URL:http://www.un.org/en/development/desa/population/publications/pdf/ageing/WPA2015_Report.pdf.
2. Turkish Ministry of Health Public Health Agency. [Turkey healthy ageing action plan and implementation program (2015–2020)].2015[Cited 14 Jul 2017.] Available from URL:http://sbu.saglik.gov.tr/Ekutuphane/kitaplar/Sa%C4%9Fl%C4%B1kl%C4%B1%20Ya%C5%9F.%202015-2020%20Pdf.pdf(in Turkish).
3. Turkish Statistical Institute. Elderly statistics.2016[Cited 14 Jul 2017.] Available from URL:http://www.turkstat.gov.tr/Start.do;jsessionid=vv2YZpnb6n8Sn0Cf3FmfWy0CKsQyWTQsdZgfwTby8pG7Dy28jpD4!‐586725009.
4. Gender Differences in Attitudes to Ageing among Norwegian Older Adults
5. The attitudes to ageing questionnaire (AAQ): development and psychometric properties