APA (7th ed.) Citation

Romer, C. D. (1999). Changes in business cycles: Evidence and explanations. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Romer, Christine D. Changes in Business Cycles: Evidence and Explanations. Cambridge: National Bureau of Economic Research, 1999.

MLA (9th ed.) Citation

Romer, Christine D. Changes in Business Cycles: Evidence and Explanations. National Bureau of Economic Research, 1999.