Kim, Hyung-kook
Namusoop, 2004
Buku Teks
Holzner, Steven
Brady Books, 1992
Buku Teks
Schildt, Herbert
McGraw-Hill, 1997
Buku Teks
[place of publication not identified]: [publisher not identified], [date of publication not identified]
Buku Teks
Hunt, William James
Addison-Wesley, 1985
Buku Teks