Krugman, P. R. (2014). International Economics (8th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Krugman, Paul R. International Economics. 8th. Noida: Pearson, 2014.
Lua MLA (9ú heag.)Krugman, Paul R. International Economics. 8th. Pearson, 2014.
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