(1973). Bibliography of publications issued by Unesco: Or under its auspices: the first twenty-five years. Unesco.
Citazione stile Chigago Style (17a edizione)Bibliography of Publications Issued by Unesco: Or Under Its Auspices: The First Twenty-five Years. Paris: Unesco, 1973.
Citatione MLA (9a ed.)Bibliography of Publications Issued by Unesco: Or Under Its Auspices: The First Twenty-five Years. Unesco, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.