(1990). Introduction To Economis An Integrated Approach To Fundamental Principles, Second Edition, John Craven. Basil Blackwell.
Lua i Stíl Chicago (17ú heag.)Introduction To Economis An Integrated Approach To Fundamental Principles, Second Edition, John Craven. Basil Blackwell, 1990.
Lua MLA (8ú heag.)Introduction To Economis An Integrated Approach To Fundamental Principles, Second Edition, John Craven. Basil Blackwell, 1990.
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