Klingberg, Frank J. (January 1952). "The Historical Alternation of Moods in American Foreign Policy". World Politics. 4 (2): 239–273. doi:10.2307/2009047. JSTOR2009047. S2CID156295082.
Klingberg, Frank J. (January 1952). "The Historical Alternation of Moods in American Foreign Policy". World Politics. 4 (2): 239–273. doi:10.2307/2009047. JSTOR2009047. S2CID156295082.
Klingberg, Frank J. (January 1952). "The Historical Alternation of Moods in American Foreign Policy". World Politics. 4 (2): 239–273. doi:10.2307/2009047. JSTOR2009047. S2CID156295082.