APA (7th ed.) Citation

Stock, J. H., & Watson, M. W. (2002). Has the business cycle changed and why? National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Stock, James H., and Mark W. Watson. Has the Business Cycle Changed and Why? Cambridge, Mass: National Bureau of Economic Research, 2002.

MLA (9th ed.) Citation

Stock, James H., and Mark W. Watson. Has the Business Cycle Changed and Why? National Bureau of Economic Research, 2002.