Krugman, P. R. (1996). The self-organizing economy. Blackwell Publishers.
Lua i Stíl Chicago (17ú heag.)Krugman, Paul R. The Self-organizing Economy. Cambridge, Mass., USA: Blackwell Publishers, 1996.
Lua MLA (8ú heag.)Krugman, Paul R. The Self-organizing Economy. Blackwell Publishers, 1996.
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