HANKE, J. E. (2013). Business Forecasting 9th Ed. Pearson.
Lua i Stíl Chicago (17ú heag.)HANKE, John E. Business Forecasting 9th Ed. Pearson, 2013.
Lua MLA (8ú heag.)HANKE, John E. Business Forecasting 9th Ed. Pearson, 2013.
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