Vira, Raghu
International Academy of Indian Culture, 1965
Buku Teks
Artikel Jurnal
edited by Stella Hurd, Linda Murphy
Routledge, 2005
Buku Teks
edited by Bernard Comrie
Oxford University Press, 1987
Buku Teks
Horman, Hans
Wissenschaftliche Buchgesellschaft, 1981
Buku Teks