Renaud, Bertrand
Oxford University Press, 1981
Buku Teks
Clinard, Marshall B. (Marshall Barron)
John Wiley & Sons, 1973
Buku Teks
edited by Robert F. Arnove
Preager, 1976
Buku Teks
Casley, D.J.
Clarendon Press Oxford, 1982
Buku Teks
Frank, Isaiah, editor
Md. Johns Hopkins University Press, 1980
Buku Teks