Crawfurd, John, author
Oxford University Press, 1971
Buku Referensi
New York : The Far Eastern Assocation, Inc
Majalah, Jurnal, Buletin
Verstappen, H. Th.
Wolters-Noordhoff , 1973
Buku Teks
Wilcocks, Julie, author
Clive Bincley, 1985
Buku Referensi
Vira, Raghu, author
International Academy of Indian Culture, 1950
Buku Referensi