World Health Organization Kobe Center. (1999). Ageing and health: A global challenge for the 21st century. World Health organization.
Lua i Stíl Chicago (17ú heag.)World Health Organization Kobe Center. Ageing and Health: A Global Challenge for the 21st Century. Belgium: World Health organization, 1999.
Lua MLA (8ú heag.)World Health Organization Kobe Center. Ageing and Health: A Global Challenge for the 21st Century. World Health organization, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.