Artikel Jurnal
Simpson, Henry, author
McGraw-Hill, 1986
Buku Teks
Ruder, Jesse H., author
John Wiley & Sons, 1987
Buku Teks
Miller, Alan R., author
Tech Publications & Sybex, c1986
Buku Teks
Ian Chandra K., author
Elex Media komputindo, 1991
Buku Teks