Jay Stewart Publications, Inc., 1971
Buku Teks
Digumarti Bhaskara Rao
Discovery , 2001
Buku Teks
Joyce, James Avery, author
Sijthoff and Noordhoff, 1978
Buku Teks
Digumarti Bhaskara Rao, editor
Discovery Publishing House, 2001
Buku Teks
Selby, David, author
Cambridge University Press, 1988
Buku Teks