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Lua i Stíl Chicago (17ú heag.)Luzio, Rodolfo, Steven Dunaway, agus Martin Kaufman. Returns to Human Capital and Investment in New Technology. Washington, D.C.: International Monetary Fund, 2001.
Lua MLA (8ú heag.)Luzio, Rodolfo, et al. Returns to Human Capital and Investment in New Technology. International Monetary Fund, 2001.
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