Ostrom, C. W. (1990). Time series analysis: Regression techniques (2nd ed.). Sage.
Lua i Stíl Chicago (17ú heag.)Ostrom, Charles W. Time Series Analysis: Regression Techniques. 2nd ed. Newbury Park, Calif: Sage, 1990.
Lua MLA (9ú heag.)Ostrom, Charles W. Time Series Analysis: Regression Techniques. 2nd ed. Sage, 1990.
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