edited by Nikolas Coupland
Wiley-Blackwell, 2010
Buku Teks
Appel, René
Amsterdam Academic Archive, 2005
Buku Teks
Winford, Donald
Blackwell, 2003
Buku Teks
edited by Ralph Ludwig, Peter Mühlhäusler and Steve Pagel
Cambridge University Press, 2019
Buku Teks
Cambridge University Press, 2009
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