Williams III, Frank P.
Pearson , 2014
Buku Teks
Walsh, Anthony, 1941-
Routledge, 2014
Buku Teks
Lilly, J. Robert
Sage Publications, 1995
Buku Teks
Matt DeLisi, Kevin M. Beaver, editor
Jones and Bartlett Publishers, 2011
Buku Teks
Andy Bennett, Steve Waksman
SAGE, 2015
Buku Teks