APA
Barro R. J., National Bureau of economic Research & Wheaton B. (2019). Taxes, incorporation and productivity. Cambridge: NBER.
Chicago
Barro Robert J, National Bureau of economic Research and Wheaton Brian. 2019. Taxes, incorporation and productivity. Cambridge: NBER.
Harvard
Barro R. J., National Bureau of economic Research and Wheaton B. (2019). Taxes, incorporation and productivity. Cambridge: NBER.
MLA
Barro Robert J, National Bureau of economic Research and Wheaton Brian. Taxes, incorporation and productivity. Cambridge: NBER. 2019.