Não informado. (1969). Yearbook of international congress proceedings. Union of International Associations.
Chicagoスタイル(17版)引用形式Não informado. Yearbook of International Congress Proceedings. Brussels: Union of International Associations, 1969.
MLA(8版)引用形式Não informado. Yearbook of International Congress Proceedings. Union of International Associations, 1969.
警告: この引用は必ずしも正確ではありません.