Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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