Juan Manuel Hernandez-Campoy, editor; Juan Camilo Conde-Silvestre, editor
Wiley-Blackwell, 2012
Buku Teks SO
Mesthrie, Rajend
Cambridge University Press, 2011
eBooks
Rajend Mesthrie, editor
Cambridge University Press, 2011
Buku Teks SO
Hudson, R. A.
Cambridge , 1980
Buku Teks SO
edited by Ulrich Ammon, Norbert Dittmar, Klaus J. Mattheier
Walter de Gruyter, 1987
Buku Referensi