Karnad, Bharat.
Macmillan India, 2005
Buku Teks
edited by Martin Shaw and Henry Coleman
Pitman, 1960
Buku Teks SO
Perpustakaan Nasional, 2000
Buku Referensi
Snyder, Glenn H.
Princeton University Press, 1961
Buku Teks
edited by, Robert G. Patman
Routledge, 2006
Buku Teks SO