Ben, Chan Chong Choon
Sweet & Maxwell Asia, 2006
Buku Teks
Pillai, Philip N., author
Singapore University Press, 1975
Buku Teks
Rachagan, Shanthy, author
LexisNexis, 2010
Buku Teks
Leong, Philip M.K.
Sharikat Bonne Nouvelle, 1969
Buku Teks
Dawson, Thomas R. P.
FEP International Sdn. Bhd., 1976
Buku Teks