Não informado. (1970). Directory. International Federation of Library Associations.
Chicagoスタイル(17版)引用形式Não informado. Directory. The Hague, Holanda: International Federation of Library Associations, 1970.
MLA(8版)引用形式Não informado. Directory. International Federation of Library Associations, 1970.
警告: この引用は必ずしも正確ではありません.