Aitchison, Jean, 1938-
Language change : progress or decay?
Cambridge University Press, 2001
 Buku Teks SO
Aitchison, Jean, 1938-
Language change : progress or decay?
Cambridge University Press, 2013
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Jones, Mari C.
Exploring language change
Routledge , 2006
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Motives for language change
edited by Raymond Hickey
Cambridge University Press, 2004
 eBooks
Explaining language
edited by John A. Hawkins
Basil Blackwell, 1988
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