Obsfeldt, R. L., Boyle, R. G., & Capilouto, E. I. (1998). Tobacco taxes, smoking restrictions and tobacco use. National Bureau of Economic Research.
Citazione stile Chigago Style (17a edizione)Obsfeldt, Robert L., Raymond G. Boyle, e Eli I. Capilouto. Tobacco Taxes, Smoking Restrictions and Tobacco Use. Cambridge: National Bureau of Economic Research, 1998.
Citatione MLA (9a ed.)Obsfeldt, Robert L., et al. Tobacco Taxes, Smoking Restrictions and Tobacco Use. National Bureau of Economic Research, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.