DeLurgio, S. A. (1998). Forecasting principles and applications Stephen A. DeLurgio. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)DeLurgio, Stephen A. Forecasting Principles and Applications Stephen A. DeLurgio. McGraw-Hill, 1998.
Lua MLA (8ú heag.)DeLurgio, Stephen A. Forecasting Principles and Applications Stephen A. DeLurgio. McGraw-Hill, 1998.
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