Krugman, P. R., & Obstfeld, M. (1994). International economics: Theory and policy (3rd.ed.). Harper Collins.
Lua i Stíl Chicago (17ú heag.)Krugman, Paul R., agus Maurice Obstfeld. International Economics: Theory and Policy. 3rd.ed. Harper: Harper Collins, 1994.
Lua MLA (9ú heag.)Krugman, Paul R., agus Maurice Obstfeld. International Economics: Theory and Policy. 3rd.ed. Harper Collins, 1994.
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