(2001). Alcohol and marijuana use among college students: Economic complements or substitutes? National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Alcohol and Marijuana Use Among College Students: Economic Complements or Substitutes? Cambridge, Mass: National Bureau of Economic Research, 2001.
MLA-Zitierstil (9. Ausg.)Alcohol and Marijuana Use Among College Students: Economic Complements or Substitutes? National Bureau of Economic Research, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.