(1991). Unesco: IBE education thesaurus (5th ed.--1990 : rev. and enl.). Unesco.
Chicago Style (17th ed.) CitationUnesco: IBE Education Thesaurus. 5th ed.--1990 : rev. and enl. Paris: Unesco, 1991.
MLA (9th ed.) CitationUnesco: IBE Education Thesaurus. 5th ed.--1990 : rev. and enl. Unesco, 1991.
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