Cita APA (7a ed.)

Ruhm, C. J., & Black, W. E. (2001). Does drinking really decrease in bad times? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Ruhm, Christopher J., y William E. Black. Does Drinking Really Decrease in Bad Times? Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Ruhm, Christopher J., y William E. Black. Does Drinking Really Decrease in Bad Times? National Bureau of Economic Research, 2001.