Krauss, M. B. (1979). A geometric approach to international trade. Blackwell.
芝加哥风格引文Krauss, Melvyn B. A Geometric Approach to International Trade. Oxford: Blackwell, 1979.
MLA引文Krauss, Melvyn B. A Geometric Approach to International Trade. Blackwell, 1979.
警告：这些引文格式不一定是100％准确.