Martin, Thomas R.
Yale University Press, 1996
Buku Teks
Hall, Jonathan M., auhtor
Wiley-Blackwell, 2014
Buku Teks
Bury, J.B., author
Modern Library, 1927
Buku Teks
Bury, J.B., author
Random House, [Date of publication not identified]
Buku Teks
Bury, J.B., author
Modern Library, 1913
Buku Teks