Edinburgh University Press, 2004
Buku Teks
Centre for Research and Training , 2008
Buku Teks
Khan, Muhammad Akram, author
Routledge, 2003
Buku Referensi
Visser, Hans G., author
Edward Elgar, 2009
Buku Teks
Kim, Suk H, author
Blackwell Publishing, 2006
Buku Teks