Kreitzberg, Charles B.
Harcourt Brace Javanovich, 1982
Buku Teks
Miller, Lawrence H.
Addison-Wesley, 1986
Buku Teks
Nanney, T. Ray
Prentice-Hall, 1981
Buku Teks
Dorn, William S.
John Wiley & Sons, 1972
Buku Teks
Data General Corporation, 1974
Buku Referensi