Não informado. (2022). Bibliography, Documentation, Terminology. United Nations Educational, Scientific and Cultural Organization (Unesco).
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Bibliography, Documentation, Terminology. Paris: United Nations Educational, Scientific and Cultural Organization (Unesco), 2022.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Bibliography, Documentation, Terminology. United Nations Educational, Scientific and Cultural Organization (Unesco), 2022.
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