BBC Worldwide Limited, 2004
Multimedia
Richter, Max M., author
Institute of South East Asia Studies,
eBooks
Robinson, W. Peter, author
Blackwell, 2003
Buku Teks
Jones, H. Spencer, author
Macmillan, 1956
Buku Teks
Campbell, George L., author
Routledge, 1998
Buku Teks