Cita APA (7a ed.)

Krugman, P. R., & Obstfeld, M. (2006). International economics: Theory and policy (7th ed.). Addison-Wesley.

Cita Chicago Style (17a ed.)

Krugman, Paul R., y Maurice Obstfeld. International Economics: Theory and Policy. 7th ed. Boston, MA: Addison-Wesley, 2006.

Cita MLA (8a ed.)

Krugman, Paul R., y Maurice Obstfeld. International Economics: Theory and Policy. 7th ed. Addison-Wesley, 2006.