[1]
[CITE[W3C Journal]] ([CODE[1997-07-24 06:38:45 +09:00]] 版) <http://www.w3journal.com/5/s1.discussn.html>
([[名無しさん]])

[2]
[CITE[Chapter 2]] ([CODE[1998-05-20 00:22:16 +09:00]] 版) <http://www.w3.org/People/Raggett/book4/ch02.html>
([[名無しさん]])


[3]
[CITE[Chapter 2]] ([TIME[1998-05-20 00:22:16 +09:00]] 版) <http://www.w3.org/People/Raggett/book4/ch02.html>
([[名無しさん]])