英媒：双汇收购史密斯菲尔德的真正原因 (China to Buy Smithfield to Get Safe Meat from U.S.)
British Broadcasting Corporation, May 30, 2013
'China's No. 1 Butcher' Turns to U.S.
The Wall Street Journal, May 30, 2013
外交部：中国政府绝不承认“旧金山和约” (China Rejects International Treaty as Basis for Japanese Sovereignty over Diaoyu)
Xinhua News Agency, May 30, 2013
China, Sri Lanka Agree Loans, Defence; Seek to Allay Indian Worries
Reuters, May 29, 2013