Charlesworth, J. C. (1969). America's changing role as a world leader. American Academy of Political and Social Science.
芝加哥风格引文Charlesworth, James C. America's Changing Role as a World Leader. Philadelphia: American Academy of Political and Social Science, 1969.
MLA引文Charlesworth, James C. America's Changing Role as a World Leader. American Academy of Political and Social Science, 1969.
警告：这些引文格式不一定是100％准确.