Sealey, Raphael
London The University of North Carolina Press 1990,
Buku Teks
Bury, J.B., author
Modern Library, 1927
Buku Teks
Grote, George, author
Routledge, 2001
Buku Referensi
Grote, George, author
Routledge, 2001
Buku Teks
Martin, A.W.
Rigby Limited, 1962
Buku Teks