(1973). Bibliography of publications issued by Unesco or under its auspices: The first twenty-five years. Unesco.
Παραπομπή σε μορφή Chicago (17η εκδ.)Bibliography of Publications Issued by Unesco or Under Its Auspices: The First Twenty-five Years. Paris: Unesco, 1973.
Παραπομπή σε μορφή MLA (9th εκδ.)Bibliography of Publications Issued by Unesco or Under Its Auspices: The First Twenty-five Years. Unesco, 1973.
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