APA

Saffer H., Grossman M., . (1987). Beer taxes, the legal drinking age, and youth motor vehicle fatalities. Cambridge, MA: National Bureau of Economic Research.

Chicago

Saffer Henry, Grossman Michael, . 1987. Beer taxes, the legal drinking age, and youth motor vehicle fatalities. Cambridge, MA: National Bureau of Economic Research.

Harvard

Saffer H., Grossman M., . (1987). Beer taxes, the legal drinking age, and youth motor vehicle fatalities. Cambridge, MA: National Bureau of Economic Research.

MLA

Saffer Henry, Grossman Michael, . Beer taxes, the legal drinking age, and youth motor vehicle fatalities. Cambridge, MA: National Bureau of Economic Research. 1987.