Farid. Fara Mademah Ahmad, author
Edinburgh University Press, 2012
Buku Teks
Lerner, Joshua, author
John Wiley & Sons, 2012
Buku Teks
Elsevier, 2014
eBooks
Kramer, Martin, author
The Carnegie Foundation , 1980
Buku Teks
Mohamad Akram Laldin, author
Cert Publication, 2011
Buku Teks