Lua APA (7ú heag.)

Krugman, P. R., & Obstfeld, M. (2009). International economics: Theory and policy (8th ed.). Pearson Addison-Wesley.

Lua i Stíl Chicago (17ú heag.)

Krugman, Paul R., agus Maurice Obstfeld. International Economics: Theory and Policy. 8th ed. Boston: Pearson Addison-Wesley, 2009.

Lua MLA (8ú heag.)

Krugman, Paul R., agus Maurice Obstfeld. International Economics: Theory and Policy. 8th ed. Pearson Addison-Wesley, 2009.

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