The Guardian, June 26, 2011
http://www.guardian.co.uk/world/2011/jun/26/tiananmen-activist-china-official-union
Related information:鄭州的士司機罷工上訪 (Henan: Taxi Drivers Go on Strike and Petition in Zhengzhou)
China's Main Union Is Yet to Earn Its Job
The Guardian, June 26, 2011
http://www.guardian.co.uk/commentisfree/2011/jun/26/china-trade-union-global-movement
Ming Pao, June 27, 2011
http://news.sina.com.hk/news/32/1/1/2367033/1.html