Abraham, B., & Ledolter, J. (1983). Statistical methods for forecasting. John Wiley.
Dyfyniad Arddull ChicagoAbraham, Bovas, and Johannes Ledolter. Statistical Methods for Forecasting. New York: John Wiley, 1983.
Dyfyniad MLAAbraham, Bovas, and Johannes Ledolter. Statistical Methods for Forecasting. John Wiley, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.