edited by Gehan Wijeyewardene
ISEAS, 1990
Buku Teks
Wong, John, author
Macmillan, 1979
Buku Teks
editor, Evan M. Berman
CRC Press, 2011
Buku Teks
Butwell, Richard
Praeger Publishers, 1969
Buku Teks
Southeast Asia Development Advisory Group, 1969
Buku Teks