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
Moore, R J
Oxford University Press, 1988
Buku Teks
Sitaramayya, B. Pattabhi
Padma Publications, 1946
Buku Teks