United Nations Educational, Scientific and Cultural Organization UNESCO. (1965). Books for the developing countries. Unesco.
Citazione stile Chigago Style (17a edizione)United Nations Educational, Scientific and Cultural Organization UNESCO. Books for the Developing Countries. Paris: Unesco, 1965.
Citatione MLA (9a ed.)United Nations Educational, Scientific and Cultural Organization UNESCO. Books for the Developing Countries. Unesco, 1965.
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