Disney, A.R, author
Cambridge University Press, 2009
Buku Teks
Hall, Walter Phelps, author
Ginn and Company, 1953
Buku Teks
Shaw, Stanford, author
Cambridge University Press, 1997
Buku Teks
Finley, M.I., author
Penguin Books, 1975
Buku Teks
Sparks, Mary, author
UK Bloomsbury Academic, 2014
Buku Teks