FAIR , 1991
Buku Teks
The Institute of Asian Research, 1996
Buku Teks
edited by Arul Chib, Roger Harris
Institute of South East Asia Studies, 2012
eBooks
P.t the Centre for south-East Asia studies University of Hull 1989,
Buku Teks
Richards P.
Croom Helm, 1981
Buku Teks