Não informado. (1973). International Journal of Aging and Human Development. Baywood Publishing.
Chicago-referens (17:e uppl.)Não informado. International Journal of Aging and Human Development. Farmingdale, NY: Baywood Publishing, 1973.
MLA-referens (8:e uppl.)Não informado. International Journal of Aging and Human Development. Baywood Publishing, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.