Brin, David, author
Bantam Books, 2002
Buku Referensi
Achenbach, Joel, author
Simon & Schuster, 1999
Buku Teks
Carliner, David, author
Avon Books, 1977
Buku Teks
Carey, Steven D., author
Mc Graw-Hill, 2000
Buku Teks
Choi, Won-Oh, author
Global Oriental, 2008
Buku Teks