[2] WGL4.0 character set ( (2009-04-13 04:49:10 +09:00 版)) <http://www.microsoft.com/typography/otspec/wgl4.htm>

[1] Windows Glyph List 4 - Wikipedia, the free encyclopedia ( (2014-04-23 23:41:51 +09:00 版)) <http://en.wikipedia.org/wiki/Windows_Glyph_List_4>

[3] Character set "wgl4" (2017-06-26 14:17:09 +09:00) <https://chars.suikawiki.org/set/%24opentype150%3Awgl4>

[4] Character set "wgl4-optional" (2017-06-26 14:17:29 +09:00) <https://chars.suikawiki.org/set/%24opentype150%3Awgl4-optional>