LIPSEY, R. G. (1996). Economics Richard G. Lipsey; Paul N. Courant. Harper Collins.
Lua i Stíl Chicago (17ú heag.)LIPSEY, Richard G. Economics Richard G. Lipsey; Paul N. Courant. Harper Collins, 1996.
Lua MLA (8ú heag.)LIPSEY, Richard G. Economics Richard G. Lipsey; Paul N. Courant. Harper Collins, 1996.
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