APA aipamena

Gruber, J., & Zinman, J. (2000). Youth smoking in the U.S: Evidence and implications. National Bureau of Economic Research.

Chicago Style aipamena

Gruber, Jonathan, and Jonathan Zinman. Youth Smoking in the U.S: Evidence and Implications. Cambridge: National Bureau of Economic Research, 2000.

MLA aipamena

Gruber, Jonathan, and Jonathan Zinman. Youth Smoking in the U.S: Evidence and Implications. National Bureau of Economic Research, 2000.