Krauss, M. B. (1979). A Geometric approach to international trade. Wiley.
Cita Chicago (17th ed.)Krauss, Melvyn B. A Geometric Approach to International Trade. NewYork: Wiley, 1979.
Cita MLA (9th ed.)Krauss, Melvyn B. A Geometric Approach to International Trade. Wiley, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.