Bal, Henri, author
Prentice-Hall, 1990
Buku Referensi
M. Ben-Ari, author
Prentice-Hall, 1990
Buku Teks
Brown, Chris, author
Prentice-Hall, 1994
Buku Teks
Ceri, Stefano, author
McGraw-Hill, 1984
Buku Teks
Nutt, Gary J., author
Prentice-Hall, 1992
Buku Teks