Badawi, El-Said, author
Routledge, 2004
Buku Referensi
Thatcher, G.W., author
Frederick Ungar, [Date of publication not identified]
Buku Teks
Herrity, Peter, author
Routledge, 2000
Buku Teks
Yeon, Jaehoon, author
Routledge, 2011
Buku Teks
Donaldson, Bruce, author
Routledge, 1997
Buku Teks