Unesco. Social Science Documentation Centre. (1990). World directory of social science institutions: Research, advanced training, documentation, professional bodies (5th ed.). Unesco.
Chicago-viite (17. p.)Unesco. Social Science Documentation Centre. World Directory of Social Science Institutions: Research, Advanced Training, Documentation, Professional Bodies. 5th ed. Paris: Unesco, 1990.
MLA-viite (9. p.)Unesco. Social Science Documentation Centre. World Directory of Social Science Institutions: Research, Advanced Training, Documentation, Professional Bodies. 5th ed. Unesco, 1990.
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