APA
Enchautegui M. E., Freeman Richard B & National Bureau Of Economic Research. (2005). Why don't more Puerto Rican men work?: The rich uncle (Sam) hypothesis. Cambridge, MA: NBER.
Chicago
Enchautegui Maria E, Freeman Richard B and National Bureau Of Economic Research. 2005. Why don't more Puerto Rican men work?: The rich uncle (Sam) hypothesis. Cambridge, MA: NBER.
Harvard
Enchautegui M. E., Freeman Richard B and National Bureau Of Economic Research. (2005). Why don't more Puerto Rican men work?: The rich uncle (Sam) hypothesis. Cambridge, MA: NBER.
MLA
Enchautegui Maria E, Freeman Richard B and National Bureau Of Economic Research. Why don't more Puerto Rican men work?: The rich uncle (Sam) hypothesis. Cambridge, MA: NBER. 2005.