Viet Nam Foreign Policy. Vietnam Ministry of Foreign Affairs. Press and Information Department – Vietnam Ministry of Foreign Affairs. 11 May 2012 [31 July 2013]. (原始内容存档于2020-03-30).
Viet Nam Foreign Policy. Vietnam Ministry of Foreign Affairs. Press and Information Department – Vietnam Ministry of Foreign Affairs. 11 May 2012 [31 July 2013]. (原始内容存档于2020-03-30).