1. Acheson speech;Dean Acheson Papers,1948
2. Kennan memorandum PPS/23, 24 February 1948;Kennan G. F;Policy Planning Staff,1948
3. Foreign Relations of the United States;Kennan G. F. F.
4. Present at the Creation: My Years in the State Department;Acheson D.,1969
5. America and the Intellectual Cold Wars in Europe;Berghahn V. R.,2001