Lockhart, R. B. (1938). Guns or butter: By R.H. Bruce Lockhart. Little, Brown.
芝加哥风格引文Lockhart, Robert Bruce. Guns or Butter: By R.H. Bruce Lockhart. Boston: Little, Brown, 1938.
MLA引文Lockhart, Robert Bruce. Guns or Butter: By R.H. Bruce Lockhart. Little, Brown, 1938.
警告：这些引文格式不一定是100％准确.