APA
Bielen D. A., National Bureau of Economic Research, Newell R. G. & Pizer W. A. (2016). Who did the ethanol tax credit benefit?. Cambridge: NBER.
Chicago
Bielen David A, National Bureau of Economic Research, Newell Richard G and Pizer William A. 2016. Who did the ethanol tax credit benefit?. Cambridge: NBER.
Harvard
Bielen D. A., National Bureau of Economic Research, Newell R. G. and Pizer W. A. (2016). Who did the ethanol tax credit benefit?. Cambridge: NBER.
MLA
Bielen David A, National Bureau of Economic Research, Newell Richard G and Pizer William A. Who did the ethanol tax credit benefit?. Cambridge: NBER. 2016.