Prabhu, Anjali, author
Wiley Blackwell, 2014
Buku Teks
edited by Chi-Yun Shin & Julian Stringer
[Publisher not identified], [Date of publication not identified]
Buku Teks
edited by Chi-Yun Shin, Julian Stringer
Edinburgh University Press, 2005
Buku Teks
Campos, Patrick F, author
The University of the philippines Pres, 2016
Buku Teks
Musser, Charles, author
Macmillan Library reference USA,, 1990
Buku Referensi