Levitt, S. D., & Porter, J. (1999). Estimating the effect of alcohol on driver risk using only fatal accident statistics. National Bureau of Economic Research.
Chicago Style (17. basım) AtıfLevitt, Steven D., ve Jack Porter. Estimating the Effect of Alcohol on Driver Risk Using Only Fatal Accident Statistics. Cambridge: National Bureau of Economic Research, 1999.
MLA (9th ed.) AtıfLevitt, Steven D., ve Jack Porter. Estimating the Effect of Alcohol on Driver Risk Using Only Fatal Accident Statistics. National Bureau of Economic Research, 1999.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..