JACKSON, J. (1986). Economics John Jackson, Cmpbell R. Mcconnell. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)JACKSON, John. Economics John Jackson, Cmpbell R. Mcconnell. McGraw-Hill, 1986.
Lua MLA (8ú heag.)JACKSON, John. Economics John Jackson, Cmpbell R. Mcconnell. McGraw-Hill, 1986.
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