Decker, S. L., & Schwartz, A. E. (2000). Cigarettes and alcohol: Substitutes or complementsn. National Bureau of Economic Research.
Lua i Stíl Chicago (17ú heag.)Decker, Sandra L., agus Amy Ellen Schwartz. Cigarettes and Alcohol: Substitutes or Complementsn. Cambridge: National Bureau of Economic Research, 2000.
Lua MLA (9ú heag.)Decker, Sandra L., agus Amy Ellen Schwartz. Cigarettes and Alcohol: Substitutes or Complementsn. National Bureau of Economic Research, 2000.
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