贵阳民众纪念六四活动未受官方制止 (Guiyang Tiananmen Commemorative Activities Yet to Be Stopped by Authorities)
British Broadcasting Corporation, May 29, 2012
http://www.bbc.co.uk/zhongwen/simp/chinese_news/2012/05/120529_6_4_guizhou.shtml
六四难属：陈希同在推脱责任 (Tiananmen Victim's Family: Chen Xitong's Evading Responsibility)
Radio Free Asia, May 30, 2012
http://www.rfa.org/mandarin/yataibaodao/lh-05302012030006.html