[1]
[CITE@en[Email Standards Project Acid Test | Email Standards Project]] ([CODE[2007-12-08 10:37:03 +09:00]] 版) <http://www.email-standards.org/acid-test/>
([[名無しさん]])

[2]
[CITE[Acid Tests - The Web Standards Project]] ([CODE[2008-01-23 07:09:21 +09:00]] 版) <http://www.acidtests.org/>