Artikel Jurnal
Rozman, Gilbert, author
Cambridge University Press, 2004
Buku Teks
editor, Abdul Kadir
Economic Research Center, 1988
Buku Teks
Stamp, L. Dudley (Laurence Dudley), 1898-1966, author
Methuen, 1950, 1952, 1967
Buku Teks
Institute of sontheast Asian's Studies, 2000
Buku Teks