Cruickshank, Henry M., author
Richard D. Irwin, 1958
Buku Teks
Jayakumar, S., author
Singapore University Press, 1974
Buku Teks
Jayakumar, S., author
Malayan Law Jaurnal, 1971
Buku Teks
Soe, Myint, author
Singapore Insurance Training Centre, 1977
Buku Teks
Page, Stephen J.
Elsevier , 2009
Buku Teks