Cita APA (7a ed.)

Irwin, D. A. (2001). The optimal tax on antebellum U.S. cotton exports. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Irwin, Douglas A. The Optimal Tax on Antebellum U.S. Cotton Exports. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Irwin, Douglas A. The Optimal Tax on Antebellum U.S. Cotton Exports. National Bureau of Economic Research, 2001.