Friedman, I. S. (1968). The developing countries in the past twenty years: Growth transformation and problems.
Citace podle Chicago (17th ed.)Friedman, Irving S. The Developing Countries in the Past Twenty Years: Growth Transformation and Problems. [s.l. : s.n.], 1968.
Citace podle MLA (9th ed.)Friedman, Irving S. The Developing Countries in the Past Twenty Years: Growth Transformation and Problems. 1968.
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