Margo, R. A. (1998). Labor market integration before the civil war. National Bureau of Economic Research.
Citazione stile Chigago Style (17a edizione)Margo, Robert A. Labor Market Integration Before the Civil War. Cambridge: National Bureau of Economic Research, 1998.
Citatione MLA (9a ed.)Margo, Robert A. Labor Market Integration Before the Civil War. National Bureau of Economic Research, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.