Cita APA (7a ed.)

Krugman, P. R., & Obstfeld, M. (2003). International economics: Theory and policy (6th ed.). Pearson Education Inc..

Cita Chicago Style (17a ed.)

Krugman, Paul R., y Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Boston ; New Delhi: Pearson Education Inc., 2003.

Cita MLA (8a ed.)

Krugman, Paul R., y Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Pearson Education Inc., 2003.