Aitchison, Jean, 1938-
Language change : progress or decay?
Cambridge University Press, 2013
 Buku Teks
Aitchison, Jean, 1938-
Language change : progress or decay?
Cambridge University Press, 2001
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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
Hawkins, John A.
Explaining language / edited by John A. Hawkins
Basil Black Well , 1988
 Buku Teks