APA
Amarante V. e. a., National Bureau of Economic Research, . (2011). Do cash transfers improve birth outcomes?. Cambridge: NBER.
Chicago
Amarante Veronica et al, National Bureau of Economic Research, . 2011. Do cash transfers improve birth outcomes?. Cambridge: NBER.
Harvard
Amarante V. e. a., National Bureau of Economic Research, . (2011). Do cash transfers improve birth outcomes?. Cambridge: NBER.
MLA
Amarante Veronica et al, National Bureau of Economic Research, . Do cash transfers improve birth outcomes?. Cambridge: NBER. 2011.