Gamson, William A.
Dorsey Press , 1968
Buku Teks
Heinemann Educational Books , 1973
Buku Teks
Karp, David A., author
Waveland Press Inc., 2004
Buku Teks
Chesler, Mark A.
Macmillan, 1981
Buku Teks
Swartz, David
The University of Chicago Press, 1997
Buku Teks