David Honneffer, Documentation Specialist (2012-06-14). "12.00 for UNIX Changelog". Opera. Archived from the original on 2012-06-18. Retrieved 2012-07-05.
"Gecko - MDN". Developer.mozilla.org. 2012-06-08. Archived from the original on 2012-08-03. Retrieved 2012-07-05.
David Honneffer, Documentation Specialist (2012-06-14). "12.00 for UNIX Changelog". Opera. Archived from the original on 2012-06-18. Retrieved 2012-07-05.