Não informado. (1969). IFLA Annual. International Federation of Library Associations and Institutions.
Chicagoスタイル(17版)引用形式Não informado. IFLA Annual. Munich, Alemanha: International Federation of Library Associations and Institutions, 1969.
MLA(8版)引用形式Não informado. IFLA Annual. International Federation of Library Associations and Institutions, 1969.
警告: この引用は必ずしも正確ではありません.