Não informado. (1970). Directory. International Federation of Library Associations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Directory. The Hague, Holanda: International Federation of Library Associations, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Directory. International Federation of Library Associations, 1970.
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