Cita APA (7a ed.)

Richardson, J. D., & Zhang, C. (1999). Revealing comparative advantage: Chaotic or coherent patterns across time and sector and U.S. trading partner? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Richardson, J. David, y Chi Zhang. Revealing Comparative Advantage: Chaotic or Coherent Patterns Across Time and Sector and U.S. Trading Partner? Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Richardson, J. David, y Chi Zhang. Revealing Comparative Advantage: Chaotic or Coherent Patterns Across Time and Sector and U.S. Trading Partner? National Bureau of Economic Research, 1999.