LIPSEY, R. G. (1972). Economics Richard G. Lipsey Dan Peter O. Steiner. Harper and Row.
Lua i Stíl Chicago (17ú heag.)LIPSEY, Richard G. Economics Richard G. Lipsey Dan Peter O. Steiner. Harper and Row, 1972.
Lua MLA (8ú heag.)LIPSEY, Richard G. Economics Richard G. Lipsey Dan Peter O. Steiner. Harper and Row, 1972.
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