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
Atrill, Peter
Prentice-Hall, 1996
Buku Teks
Warde, Ibrahim
Edinburgh University Press, 2000
Buku Teks SO