Kulke, Herman
Cornell University, 1978
Buku Teks
BlackWell Publishing, 2003
Buku Teks
Ratnakar, Pramesh
Tiger Books International , 1996
Buku Teks
Saraswati, Sri Chandrasekharendra, author
Bharatiya Vidya Bhavan, 1966
Buku Teks
Ganesh & Co (Madras) Private Ltd., 1970
Buku Teks