Crystal,David. (1997). The Cambridge Encyclopedia of Language (2nd ed.). Press Syndicate of the University of Cambridge.
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Chicago-čujuhus (17. p.)
Crystal,David. The Cambridge Encyclopedia of Language. 2nd ed. New York: Press Syndicate of the University of Cambridge, 1997.
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MLA-čujuhus (9. p.)
Crystal,David. The Cambridge Encyclopedia of Language. 2nd ed. Press Syndicate of the University of Cambridge, 1997.
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