Mesthrie, Rajend
Cambridge University Press, 2011
eBooks
Chew, Fong Peng
National Department For Culture and Arts, 2009
Buku Teks SO
Coulmas, Florian
Blackwell Publishers, 1998
Buku Teks SO
Juan Manuel Hernandez-Campoy, editor; Juan Camilo Conde-Silvestre, editor
Wiley-Blackwell, 2012
Buku Teks SO
edited by Keith J. Holyoak, Robert G. Morrison
Cambridge University Press, 2005
Buku Referensi