Cromwell, J. H. R. (1941). Pax americana: American democracy and world peace. A. Kroch and Son.
芝加哥风格引文Cromwell, James Henry Roberts. Pax Americana: American Democracy and World Peace. Chicago: A. Kroch and Son, 1941.
MLA引文Cromwell, James Henry Roberts. Pax Americana: American Democracy and World Peace. A. Kroch and Son, 1941.
警告：这些引文格式不一定是100％准确.