Bernstein, Richard J., author
Polity, 2013
Buku Teks
Ray, Larry, author
Sage, 2018
Buku Teks
edited by George Mckenzie, Jackie Powell, Robin Usher
The Falmer Press, 1997
Buku Teks
Whitaker, Leighton C.
Fla. : CRC Press, , 2000.
Buku Teks
Jim Mcgoldrick, editor
Routledge, 2001
Buku Teks