Gruber, J., & Zinman, J. (2000). Youth smoking in the U.S: Evidence and implications. National Bureau of Economic Research.
芝加哥风格引文Gruber, Jonathan, 与 Jonathan Zinman. Youth Smoking in the U.S: Evidence and Implications. Cambridge: National Bureau of Economic Research, 2000.
MLA引文Gruber, Jonathan, 与 Jonathan Zinman. Youth Smoking in the U.S: Evidence and Implications. National Bureau of Economic Research, 2000.
警告：这些引文格式不一定是100％准确.