Holloway, John
Cambridge University Press, 1979
Buku Teks SO
Puckett, Kent
Cambridge University Press, 2016
Buku Teks SO
edited by David Wood
Routledge, 1991
Buku Teks SO
Schiffrin, Deborah
Cambridge University Press , 2006
Buku Teks SO
De Fina, Anna
Cambridge University Press;, 2012
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