Carbaugh, R. J. (2004). International EconomicsRobert J. Carbaugh. Thomso South-Wester.
Lua i Stíl Chicago (17ú heag.)Carbaugh, Robert J. International EconomicsRobert J. Carbaugh. Thomso South-Wester, 2004.
Lua MLA (8ú heag.)Carbaugh, Robert J. International EconomicsRobert J. Carbaugh. Thomso South-Wester, 2004.
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