APA
Ravallion M., National Bureau of Economic Research, . (2014). Are the worlds poorest being left behind?. Cambridge: NBER.
Chicago
Ravallion Martin, National Bureau of Economic Research, . 2014. Are the worlds poorest being left behind?. Cambridge: NBER.
Harvard
Ravallion M., National Bureau of Economic Research, . (2014). Are the worlds poorest being left behind?. Cambridge: NBER.
MLA
Ravallion Martin, National Bureau of Economic Research, . Are the worlds poorest being left behind?. Cambridge: NBER. 2014.