APA
Chaloupka F. J., Tauras John A & Grossman Michael. (1998). The Demand for cocaine and marijuana by youth. Cambridge, MA: NBER.
Chicago
Chaloupka Frank J, Tauras John A and Grossman Michael. 1998. The Demand for cocaine and marijuana by youth. Cambridge, MA: NBER.
Harvard
Chaloupka F. J., Tauras John A and Grossman Michael. (1998). The Demand for cocaine and marijuana by youth. Cambridge, MA: NBER.
MLA
Chaloupka Frank J, Tauras John A and Grossman Michael. The Demand for cocaine and marijuana by youth. Cambridge, MA: NBER. 1998.
