Cita APA (7a ed.)

Margo, R. A. (2002). The North-South wage gap, before and after the Civil War. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Margo, Robert Andrew. The North-South Wage Gap, Before and After the Civil War. Cambridge, MA: National Bureau of Economic Research, 2002.

Cita MLA (9a ed.)

Margo, Robert Andrew. The North-South Wage Gap, Before and After the Civil War. National Bureau of Economic Research, 2002.