S.D. Muni
Academic foundation, 2008
Buku Teks
NIDS, 2021
Buku Teks
London : East India Association
Majalah, Jurnal, Buletin
Hanna, Nagy, author
The World Bank, 1996
Buku Referensi
edited by Daljit Singh and Lorraine C. Salazar
Institute of Southeast Asian Studies, 2006
Buku Teks