Zaks, Rodnay, author
Sybex, 1984
Buku Teks
Tokheim, Roger L., author
McGraw-Hill, 1990
Buku Teks
Carr, Joseph J., author
Reston Publishing, 1982
Buku Teks
Tokheim, Roger L., author
McGraw-Hill, 1983
Buku Teks
Dixey, Graham, author
Stanley Thornes, 1991
Buku Teks