Healey, Joseph F., 1945-, author
Sage, 2012
Buku Teks
Schaefer, Richard T, author
New York, 2003
Buku Teks
Schaefer, Richard T, author
McGraw-Hill, 1995
Buku Teks
McGraw-Hill, 2003
Buku Teks
Healey, Joseph F., 1945-, author
Pine Forge Press, 2007
Buku Teks