Trulove, James, author
McGraw-Hill, 2000
Buku Teks
Miller, Mark A., author
M&T Books, 1991
Buku Referensi
Hein, Mathias, author
International Thomson Computer Press, 1997
Buku Teks
Farrell, Jane, author
J.B. Lippincott, 1986
Buku Teks
Charle, Suzanne, author
Collins, 1990
Buku Referensi