Ben C. Gerwick
CRC Press,, 2007
Buku Teks
Shaeffer, R.E., author
Prentice-Hall, 1980
Buku Teks
Lin, T.Y. (Tung Yen), author
John Wiley & Sons, 1960
Buku Teks
Vazirani, V.N., author
Khanna Publishers, 1979
Buku Teks
Pile, John, author
Watson-Guptil, 1976
Buku Referensi