APA (7th ed.) Citation

Diebold, F. X., & Kilian, L. (1999). Unit root tests are useful for selecting forecasting models. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Diebold, Francis X., and Lutz Kilian. Unit Root Tests Are Useful for Selecting Forecasting Models. Cambridge, MA: National Bureau of Economic Research, 1999.

MLA (9th ed.) Citation

Diebold, Francis X., and Lutz Kilian. Unit Root Tests Are Useful for Selecting Forecasting Models. National Bureau of Economic Research, 1999.

Warning: These citations may not always be 100% accurate.