Makridakis, S. G. (1983). Forecasting: Methods and applications second edition. John Wiley Sons.
Lua i Stíl Chicago (17ú heag.)Makridakis, Spyros G. Forecasting: Methods and Applications Second Edition. John Wiley Sons, 1983.
Lua MLA (8ú heag.)Makridakis, Spyros G. Forecasting: Methods and Applications Second Edition. John Wiley Sons, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.