(1973). Bibliography of publications issued by Unesco or under its auspices: The first twenty-five years. Unesco.
Chicago (17e ed.) BronvermeldingBibliography of Publications Issued by Unesco or Under Its Auspices: The First Twenty-five Years. Paris: Unesco, 1973.
MLA (9e ed.) BronvermeldingBibliography of Publications Issued by Unesco or Under Its Auspices: The First Twenty-five Years. Unesco, 1973.
Let op: Deze citaties zijn niet altijd 100% accuraat.