Heller, Dan
O`Reilly, 1991
Buku Referensi
Lotus, [date of publication not identified]
Buku Teks
Buku Referensi
Harbison, Samuel P.
Prentice-Hall, 1995
Buku Referensi
Bruce W. Char, Keith O. Geddes, Gaston H. Gonnet, Benton L. Leong, Michael B. Monagan, Stephen M. Watt
Springer-Verlag, 1991
Buku Referensi