World Health Organization Kobe Center. (1999). Ageing and health: A global challenge for the 21st century. World Health organization.
Citazione stile Chigago Style (17a edizione)World Health Organization Kobe Center. Ageing and Health: A Global Challenge for the 21st Century. Belgium: World Health organization, 1999.
Citatione MLA (8a ed.)World Health Organization Kobe Center. Ageing and Health: A Global Challenge for the 21st Century. World Health organization, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.