Tool for Electronic References of APA Style: Copy URL+

Use the extension Copy Url+ of Firefox to write those elctronic references of APA Style.

After the extension installed, you need to add a file named user.js placed at user's directory to customed the APA Style.[1]

user_pref('copyurlplus.menus.1.label', 'Copy URL (APA Style)');

user_pref('copyurlplus.menus.1.copy', 'Author (date) %TITLE%. Retrieved %LOCAL_TIME%, from %URL%');

For example, the Copy URL+ result of this webpage titled Firefox Help: Keyboard Shortcuts will be

Author (date) Firefox Help: Keyboard Shortcuts. Retrieved Thursday, December 09, 2004 23:25:12, from http://www.mozilla.org/support/firefox/keyboard

The flaw is could not to custom the detail of time stamp more flexibly.
[1] Due to the locatin of user's directory depend on your OS, please read copyurlplus: customize
[2] Jedi: 我在用的 Firefox 1.0 PR 延伸套件 2004-10-81 (written in chinese)