Levitt, S. D., & Porter, J. (1999). Estimating the effect of alcohol on driver risk using only fatal accident statistics. National Bureau of Economic Research.
Citazione stile Chigago Style (17a edizione)Levitt, Steven D., e Jack Porter. Estimating the Effect of Alcohol on Driver Risk Using Only Fatal Accident Statistics. Cambridge: National Bureau of Economic Research, 1999.
Citatione MLA (9a ed.)Levitt, Steven D., e Jack Porter. Estimating the Effect of Alcohol on Driver Risk Using Only Fatal Accident Statistics. National Bureau of Economic Research, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.