Butke , P., & Porter, R. (1987). The Social History of language. Univ. pr..
Chicago-čujuhus (17. p.)Butke , Peter, juo Roy Porter. The Social History of Language. Cambridge: Univ. pr., 1987.
MLA-čujuhus (9. p.)Butke , Peter, juo Roy Porter. The Social History of Language. Univ. pr., 1987.
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