APA
Kaestner R., Lee Won Chan & National Bureau Of Economic Research. (2003). The effect of welfare reform on prenatal care and birth weight. Cambridge, MA: NBER.
Chicago
Kaestner Robert, Lee Won Chan and National Bureau Of Economic Research. 2003. The effect of welfare reform on prenatal care and birth weight. Cambridge, MA: NBER.
Harvard
Kaestner R., Lee Won Chan and National Bureau Of Economic Research. (2003). The effect of welfare reform on prenatal care and birth weight. Cambridge, MA: NBER.
MLA
Kaestner Robert, Lee Won Chan and National Bureau Of Economic Research. The effect of welfare reform on prenatal care and birth weight. Cambridge, MA: NBER. 2003.