Berencon, Mark L., author
Prentice-Hall, 1992
Buku Teks
Moore, David S.
W.H. Freeman and Company, 2000
Buku Teks
Gerstman, B. Burt, author
Jones and Barlett Publishers, 2008
Buku Teks
Hamburg, Morris
Harcourt Brace Javanovich , 1974
Buku Teks
Anderson, Theodore R.
Holt, Rinehart, 1968
Buku Teks