Eubanks, Philip, 1954-, author
Cambridge University Press, 2011
eBooks
De Fina, Anna, author
[Cambridge University Press;, ], 2012
eBooks
Schiffrin, Deborah, author
Blackwell , 2000
Buku Teks
Cook, Guy (Guy W. D.), author
Oxford University Press , 1993
Buku Teks
Nunan, David
Penguin English, 1993
Buku Teks