Crystal, David, 1941-
The Cambridge encyclopedia of the English language
Cambridge University Press, 1995
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Cambridge international dictionary of english
editor in chief Paul Procter
Cambridge University Press, 1995
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Lutz, William D.
The cambridge thesaurus of American English
Cambridge University Press, 1994
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The Cambridge guide to literature in English
edited by Ian Qusby
Cambridge University Press, 1988
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Peters, Pam
The Cambridge guide to English usage
Cambridge University Press, 2006
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