APA (7 ম সংস্করণ) উদ্ধৃতি

Chaloupka, F. J. (1998). The demand for cocaine and marijuana by youth. National Bureau of Economic Research.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Chaloupka, Frank J. The Demand for Cocaine and Marijuana by Youth. Cambride: National Bureau of Economic Research, 1998.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Chaloupka, Frank J. The Demand for Cocaine and Marijuana by Youth. National Bureau of Economic Research, 1998.