Thomas Decker, editor
[, Springer], 2012
eBooks
Donatelle, Rebecca J., author
Allyn and Bacon , 1997
Buku Teks
Macionis, John J., author
Prentice-Hall, 2000
Buku Teks
Chandler, Daniel, author
Routledge, 2002
Buku Teks
Lauer, David A., 1955-2011, author
Thomson Learning, 1995
Buku Teks