LIPSEY, R. G. Economics Richard G. Lipsey And Peter O. Steiner. Harper International Edition.
Lua i Stíl Chicago (17ú heag.)LIPSEY, Richard G. Economics Richard G. Lipsey And Peter O. Steiner. Harper International Edition.
Lua MLA (8ú heag.)LIPSEY, Richard G. Economics Richard G. Lipsey And Peter O. Steiner. Harper International Edition.
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