Citação norma APA

Saffer, H., & Chaloupka, F. (1998). Demographic differentials in the demand for alcohol and illici drugs. National Bureau of Economic Research.

Citação norma Chicago

Saffer, Henry, and Frank Chaloupka. Demographic Differentials in the Demand for Alcohol and Illici Drugs. Cambride: National Bureau of Economic Research, 1998.

Citação norma MLA

Saffer, Henry, and Frank Chaloupka. Demographic Differentials in the Demand for Alcohol and Illici Drugs. National Bureau of Economic Research, 1998.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.