Innes, Judith E.
Routledge, 2010
Buku Teks
Lipsky, Michael
Russell Sage Foundation, 2010
Buku Teks
Koven, Steven G
New York CRC Pres, 2015
Buku Teks
dited by John M. Bryson, Barbara C. Crosby, Laura Bloomberg
FL CRC Press, 2016
Buku Teks
Hampshire Palgrave Macmillan, 2014
Buku Teks