Bradford, Michael, author
Oxford University Press, 1994
Buku Teks
Leo Suryadinata, author
Institute of Southeast Asian Studies, 2003
Buku Referensi
edited by Roy O. Grepp
Schenkman Publishing Company, Inc., 1963
Buku Teks
Artikel Jurnal
The Population Reference Bureau, Inc., 1976
Buku Teks