PhotoBlog - Wisconsin votes on recalling their governor http://photoblog.msnbc.msn.com/_news/2012/06/05/12068724-wisconsin-votes-on-recalling-their-governor?lite
BBC中文網 - 簡要新聞 - 美國威斯康辛州舉行罷免州長投票 http://www.bbc.co.uk/zhongwen/trad/rolling_news/2012/06/120605_rolling_wiscosin_poll.shtml
BBC中文網 - 簡要新聞 - 美國威斯康星州州長沃克逃過罷免 http://www.bbc.co.uk/zhongwen/trad/rolling_news/2012/06/120606_rolling_walker_survives_recall_election.shtml
Recall election - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Recall_election
罷免選舉 - 维基百科，自由的百科全书 http://zh.wikipedia.org/wiki/%E7%BD%A2%E5%85%8D%E9%80%89%E4%B8%BE
