Cita APA (7a ed.)

O'Rourke, K. H., & Williamson, J. G. (2000). When did globalizaion begin? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

O'Rourke, Kevin H., y Jeffrey G. Williamson. When Did Globalizaion Begin? Cambridge: National Bureau of Economic Research, 2000.

Cita MLA (9a ed.)

O'Rourke, Kevin H., y Jeffrey G. Williamson. When Did Globalizaion Begin? National Bureau of Economic Research, 2000.