Tagliamonte, Sali, author
West Sussex John Wiley & Sons, 2016
Buku Teks
Maguire, Warren, editor
Cambridge University Press, 2011
eBooks
Hymes, Dell H., author
Taylor and Francis Inc., 1996
Buku Teks
Cambridge University Press, 2010
eBooks
penyunting Muhadjir, Basuki Suhardi
Fakultas Sastra Universitas Indonesia, 1990
Buku Teks