The handbook of language contact
edited by Raymond Hickey
Wiley-Blackwell, 2010
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Weinreich, Uriel
Languages in contact: findings and problems
Mounton, 1974
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Winford, Donald
An Introduction to contact linguistics
Blackwell, 2003
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Drinka, Bridget, 1951-.
Language contact in Europe : the periphrastic perfect through history
Cambridge University Press, 2017
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Hamers, Josiane F.
Bilinguality and bilingualism
Cambridge University Press , 1993
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