APA
Pacula R. L., . (1998). Adolescent alcohol and marijuana consumption : is there really a gateway effect?. Cambridge, Mass: National Bureau of Economic Research.
Chicago
Pacula Rosalie Liccardo, . 1998. Adolescent alcohol and marijuana consumption : is there really a gateway effect?. Cambridge, Mass: National Bureau of Economic Research.
Harvard
Pacula R. L., . (1998). Adolescent alcohol and marijuana consumption : is there really a gateway effect?. Cambridge, Mass: National Bureau of Economic Research.
MLA
Pacula Rosalie Liccardo, . Adolescent alcohol and marijuana consumption : is there really a gateway effect?. Cambridge, Mass: National Bureau of Economic Research. 1998.