APA
Chaloupka F. J., Laixuthai A & National Bureau Of Economic Research. (1994). Do Youths Substitute Alcohol And Marijuana? Some Econometric Evidence. Cambridge, MA: NBER.
Chicago
Chaloupka Frank J, Laixuthai A and National Bureau Of Economic Research. 1994. Do Youths Substitute Alcohol And Marijuana? Some Econometric Evidence. Cambridge, MA: NBER.
Harvard
Chaloupka F. J., Laixuthai A and National Bureau Of Economic Research. (1994). Do Youths Substitute Alcohol And Marijuana? Some Econometric Evidence. Cambridge, MA: NBER.
MLA
Chaloupka Frank J, Laixuthai A and National Bureau Of Economic Research. Do Youths Substitute Alcohol And Marijuana? Some Econometric Evidence. Cambridge, MA: NBER. 1994.