APA (7th ed.) Citation

Margo, R. A. (1998). Labor market integration before the civil war. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Margo, Robert A. Labor Market Integration Before the Civil War. Cambridge: National Bureau of Economic Research, 1998.

MLA (9th ed.) Citation

Margo, Robert A. Labor Market Integration Before the Civil War. National Bureau of Economic Research, 1998.

Warning: These citations may not always be 100% accurate.