(1973). Bibliography of publications issued by Unesco or under its auspices: The first twenty-five years. Unesco.
Chicago-referens (17:e uppl.)Bibliography of Publications Issued by Unesco or Under Its Auspices: The First Twenty-five Years. Paris: Unesco, 1973.
MLA-referens (9:e uppl.)Bibliography of Publications Issued by Unesco or Under Its Auspices: The First Twenty-five Years. Unesco, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.