(1987). The World of learning 1987: The standard and authoritative guide to educational, scientific and cultural institutions all over the world (37th ed.). Europa.
Citace podle Chicago (17th ed.)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.
Citace podle MLA (9th ed.)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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