Cita APA (7a ed.)

Smetters, K. A., & Gravelle, J. (2001). The exchange theory of teenage smoking and the counterproductiveness of moderate regulation. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Smetters, Kent A., y Jennifer Gravelle. The Exchange Theory of Teenage Smoking and the Counterproductiveness of Moderate Regulation. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Smetters, Kent A., y Jennifer Gravelle. The Exchange Theory of Teenage Smoking and the Counterproductiveness of Moderate Regulation. National Bureau of Economic Research, 2001.