Levy, D. E., & Meara, E. (2005). The effect of the 1998 Master Settlement Agreement on prenatal smoking. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Levy, Douglas E., und Ellen Meara. The Effect of the 1998 Master Settlement Agreement on Prenatal Smoking. Cambridge, Mass: National Bureau of Economic Research, 2005.
MLA-Zitierstil (9. Ausg.)Levy, Douglas E., und Ellen Meara. The Effect of the 1998 Master Settlement Agreement on Prenatal Smoking. National Bureau of Economic Research, 2005.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.