Adelman, M.A.
Johns Hopkins University Press, 1972
Buku Teks
Horsnell, Paul
Oxford University Press, 1993
Buku Teks
Willrich, Mason
The Free Press, 1975
Buku Teks
Simmons, Matthew R.
John Wiley & Sons, 2005
Buku Teks
edited with an introduction by William P. Bundy
W.W. Norton, 1975
Buku Teks