Shinohara, Miyohei
Institute of Developing Economics, 1977
Buku Teks SO
edited by Lee Soo Ann
Singapore University Press, 1973
Buku Teks
Kirgis, Frederic L.
West Publishing, 1993
Buku Teks SO
Institute of Southeast Studies , 1995
Buku Teks
edited by Michael J. Montesano
ISEAS, 2012
Buku Teks SO