Hanke, J. E., & Wichern, D. W. (2015). Business Forecasting (9th ed.). Pearson India Education Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Hanke, John E., agus Dean W. Wichern. Business Forecasting. 9th ed. New Delhi: Pearson India Education Pvt. Ltd, 2015.
Lua MLA (9ú heag.)Hanke, John E., agus Dean W. Wichern. Business Forecasting. 9th ed. Pearson India Education Pvt. Ltd, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.