Acuff, F. Gene, author
The Dryden Press, 1973
Buku Teks SO
Lemert, Charles C.
Southern Illinois University Press, 1979
Buku Teks SO
Weber, Max, 1864-1920, author
Routledge & Kegan Paul, 1977
Buku Teks
Calhoun, Craig J., author
McGraw-Hill , 1994
Buku Teks
Farley, John E., author
Prentice-Hall, 1992
Buku Teks