Farley, John E., author
Prentice-Hall, 1987
Buku Teks
David J. Bartholomew ... [et.al]
CRC Press, Taylor & Francis Group, 2008
Buku Teks
Insor, D., author
Frederick A.Praeger, 1963
Buku Teks
Stopher, Peter R., author
Lexington Books, 1979
Buku Teks
Simon, David R.
McGraw-Hill, 1995
Buku Teks