APA
Chay K. Y., Greenstone M., . (1999). The impact of air pollution on infant mortality : evidence from geographic variation in pollution shocks induced by a recession. Cambridge, Mass: National Bureau of Economic Research.
Chicago
Chay Kenneth Y, Greenstone Michael, . 1999. The impact of air pollution on infant mortality : evidence from geographic variation in pollution shocks induced by a recession. Cambridge, Mass: National Bureau of Economic Research.
Harvard
Chay K. Y., Greenstone M., . (1999). The impact of air pollution on infant mortality : evidence from geographic variation in pollution shocks induced by a recession. Cambridge, Mass: National Bureau of Economic Research.
MLA
Chay Kenneth Y, Greenstone Michael, . The impact of air pollution on infant mortality : evidence from geographic variation in pollution shocks induced by a recession. Cambridge, Mass: National Bureau of Economic Research. 1999.