APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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