Abd aziz Abd Jalal, editor
CERT publications Sdn. Bhd., 2011
Buku Teks SO
Globe Law, 2008
Buku Teks SO
Kureshi, Hussain
John Wiley & Sons, 2015
Buku Teks SO
Warde, Ibrahim
Edinburgh University Press, 2000
Buku Teks SO
Khan, Muhammad Akram
Routledge, 2003
Buku Referensi