Laville, J. (2003). PEKEA (Political and Ethical Knowledge on Economics Activities).
Lua i Stíl Chicago (17ú heag.)Laville, Jean-Louis. PEKEA (Political and Ethical Knowledge on Economics Activities). 2003.
Lua MLA (8ú heag.)Laville, Jean-Louis. PEKEA (Political and Ethical Knowledge on Economics Activities). 2003.
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