Lind, Andrew W.
University Press of Hawaii, 1974
Buku Teks SO
Elliott, Alan J.
[Publisher not identified], [Date of publication not identified]
Buku Teks
Morton, John K.
Airlife, 2001
Buku Teks
Tang, Sok-Chun
Malayan Law Journal, 1973
Buku Teks SO
Song, Ong Siang
University Malaya Press, 1967
Buku Teks SO