Não informado. (1974). Ageing International. International Federation on Ageing.
Chicagoスタイル(17版)引用形式Não informado. Ageing International. Washington: International Federation on Ageing, 1974.
MLA(8版)引用形式Não informado. Ageing International. International Federation on Ageing, 1974.
警告: この引用は必ずしも正確ではありません.