APA
Romer C. D., National Bureau of Economic Research & Romer D. H. (2012). The Incentive effects of marginal tax rates. Cambridge: NBER.
Chicago
Romer Christina D, National Bureau of Economic Research and Romer David H. 2012. The Incentive effects of marginal tax rates. Cambridge: NBER.
Harvard
Romer C. D., National Bureau of Economic Research and Romer D. H. (2012). The Incentive effects of marginal tax rates. Cambridge: NBER.
MLA
Romer Christina D, National Bureau of Economic Research and Romer David H. The Incentive effects of marginal tax rates. Cambridge: NBER. 2012.