Chambliss, William J., author
McGraw-Hill, 1975
Buku Teks
Lee, David, author
Routledge, 1995
Buku Teks
Wagne, Peter, author
Routledge, 1994
Buku Teks
Inkeles, Alex
Prentice-Hall, 1964
Buku Teks
Schrag, Clarence C., author
Harper & Row, 1963
Buku Teks