Cita APA

Gruber, J. (2000). Youth smoking in the U.S: Prices and policies. National Bureau of Economic Research.

Citación estilo Chicago

Gruber, Jonathan. Youth Smoking in the U.S: Prices and Policies. Cambridge: National Bureau of Economic Research, 2000.

Cita MLA

Gruber, Jonathan. Youth Smoking in the U.S: Prices and Policies. National Bureau of Economic Research, 2000.

Warning: These citations may not always be 100% accurate.