edited by Nikolas Coupland
Wiley-Blackwell, 2010
Buku Teks
Appel, René
Amsterdam Academic Archive, 2005
Buku Teks
Drinka, Bridget, 1951-.
Cambridge University Press, 2017
Buku Teks
Winford, Donald
Blackwell Publishing, 2003
Buku Teks
Cambridge University Press, 2009
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