Moore, R J
Oxford University Press, 1988
Buku Teks
Page, David, editor
Oxford University Press, 1982
Buku Teks
Palmer, Norman D.
Houghton Mifflin, 1961
Buku Teks
Palmer, Norman D.
Houghton Mifflin, 1971
Buku Teks
Sitaramayya, B. Pattabhi
Padma Publications, 1946
Buku Teks