Schultz, T. W. (1971). Investment in human capital: The role of education and of research. Free Press.
Citace podle Chicago (17th ed.)Schultz, Theodore William. Investment in Human Capital: The Role of Education and of Research. New York: Free Press, 1971.
Citace podle MLA (9th ed.)Schultz, Theodore William. Investment in Human Capital: The Role of Education and of Research. Free Press, 1971.
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