Gray S, B. (1964). Human Capital: A theoretical and empirical analysis, with special reference to education. National Bureau of Economic Research.
Citace podle Chicago (17th ed.)Gray S, BECKER. Human Capital: A Theoretical and Empirical Analysis, with Special Reference to Education. New York: National Bureau of Economic Research, 1964.
Citace podle MLA (9th ed.)Gray S, BECKER. Human Capital: A Theoretical and Empirical Analysis, with Special Reference to Education. National Bureau of Economic Research, 1964.
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