Nancy Birdsall, J. R. B. (1984). DOES GEOGRAPHICAL AGGREGATION CAUSE OVER ESTIMATES OF THE RETURNS TO SCHOOLING. World Bank.
Chicago-Zitierstil (17. Ausg.)Nancy Birdsall, Jerl R. Behrman. DOES GEOGRAPHICAL AGGREGATION CAUSE OVER ESTIMATES OF THE RETURNS TO SCHOOLING. World Bank, 1984.
MLA-Zitierstil (8. Ausg.)Nancy Birdsall, Jerl R. Behrman. DOES GEOGRAPHICAL AGGREGATION CAUSE OVER ESTIMATES OF THE RETURNS TO SCHOOLING. World Bank, 1984.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.