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Lua i Stíl Chicago (17ú heag.)Gold, Bela. Explorations in Managerial Economics: Productivity, Costs, Technology, and Growth. London: Macmillan, 1971.
Lua MLA (8ú heag.)Gold, Bela. Explorations in Managerial Economics: Productivity, Costs, Technology, and Growth. Macmillan, 1971.
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