Kravis, I. B. (1971). Price competitiveness in world trade / I. B. Kravis and Robert E. Lipsey. National Bureau of Economic Research.
芝加哥风格引文Kravis, Irving B. Price Competitiveness in World Trade / I. B. Kravis and Robert E. Lipsey. New York: National Bureau of Economic Research, 1971.
MLA引文Kravis, Irving B. Price Competitiveness in World Trade / I. B. Kravis and Robert E. Lipsey. National Bureau of Economic Research, 1971.
警告：这些引文格式不一定是100％准确.