Peters, B. Guy, author
Sage , 2013
Buku Teks
Peters, B. Guy, author
CQ Press, , 2004
Buku Teks
Hird, John A., author
Wadsworth , 2004
Buku Teks
Clarke E. Cochran, Lawrence C. Mayer, T.R. Carr, N. Joseph Cayer, Mark J. McKenzie, Laura R. Peck
USA Cengage Learning, 2016
Buku Teks
Dye, Thomas R., author
Pearson, 2014
Buku Teks