(1987). The World of learning 1987: The standard and authoritative guide to educational, scientific and cultural institutions all over the world (37th ed.). Europa.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)The World of Learning 1987: The Standard and Authoritative Guide to Educational, Scientific and Cultural Institutions All over the World. 37th ed. London: Europa, 1987.
MLA -ийн эшлэл (9 дэх хэвлэлт)The World of Learning 1987: The Standard and Authoritative Guide to Educational, Scientific and Cultural Institutions All over the World. 37th ed. Europa, 1987.
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