Nygh, P.E. [Peter Edward]
Butterworth, 1978
Buku Teks
Bates, Frank
Law Book Co. , 1985
Buku Teks SO
Sendall, Jane
Oxford University Press, 2014
Buku Teks
Rodgers, M.E.
Blackstone Press Limited, 1998
Buku Referensi
Romero, Flerida Ruth P.
U.P. Law Center, 1981
Buku Teks SO