Bartee, Edwin M., author
Prentice-Hall, 1968
Buku Teks
Berger, Paul D., author
Duxbury, 2002
Buku Teks
Johnson, Norman L., author
John Wiley & Sons, 1977
Buku Teks
Timings, R.L. (Roger Leslie), 1927-, author
Longman, 1988
Buku Teks
Cochran, William G., author
John Wiley & Sons, 1957
Buku Teks