Skolnick, Jerome H., author
Little, Brown, 1985
Buku Teks
Wilson, James Q., author
D.C. Heath, 1995
Buku Teks
Wilson, James Q., author
D.C. Helath and Co., 1986
Buku Teks
by William J. Keefe ... [and others]
The Dorsey Press, 1983
Buku Teks
by James W. Ceaser ... [and others]
McGraw-Hill , 1984
Buku Teks