Barley, Nigel
Penguin books , 2002
Buku Teks
Barley, Nigel
H. Holt, 1992
Buku Teks
Bastin, John
The Clarendon Press , 1957
Buku Teks
Raffles, Thomas Stamford, author
Antiques of the Orient, 1993
Buku Referensi
Hahn, Emily
University of Malaya Press, 1968
Buku Teks