Pacula, R. L. (1998). Adolescent alcohol and marijuana consumption: Is there really a gateway effect? National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Pacula, Rosalie Liccardo. Adolescent Alcohol and Marijuana Consumption: Is There Really a Gateway Effect? Cambridge, Mass: National Bureau of Economic Research, 1998.
MLA-Zitierstil (9. Ausg.)Pacula, Rosalie Liccardo. Adolescent Alcohol and Marijuana Consumption: Is There Really a Gateway Effect? National Bureau of Economic Research, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.