Renaud, Bertrand
Oxford University Press, 1981
Buku Teks
Clinard, Marshall B. (Marshall Barron), author
John Wiley & Sons, 1973
Buku Teks
Carman, John S.
Pergamon Press, 1979
Buku Teks
Howe, James W., author
Praeger for the Council, 1975
Buku Teks
edited by John M. Bennett and Robert E. Kalman
North Holland, 1981
Buku Teks