Raines, John C.
Teraju, 2003
Buku Teks
Hughes, E.R., editor
Hutchinson's University Library, 1950
Buku Teks
Mark, K.
Foreign Languages Publishing House, s.a.
Buku Teks
Carritt, E. F.
At The Clarendon Press, 1935
Buku Teks
O dea, Thomas F.
Prentice-Hall, 1973
Buku Teks