Cita APA (7th ed.)

O'Rourke, K. H., & Williamson, J. G. (2001). After Columbus: Explaining the global trade boom 1500-1800. National Bureau of Economic Research.

Cita Chicago (17th ed.)

O'Rourke, Kevin H., i Jeffrey G. Williamson. After Columbus: Explaining the Global Trade Boom 1500-1800. Cambridge: National Bureau of Economic Research, 2001.

Cita MLA (9th ed.)

O'Rourke, Kevin H., i Jeffrey G. Williamson. After Columbus: Explaining the Global Trade Boom 1500-1800. National Bureau of Economic Research, 2001.