Krugman, P. R. (1999). The return of depression economics (First edition.). W.W. Norton.
Lua i Stíl Chicago (17ú heag.)Krugman, Paul R. The Return of Depression Economics. First edition. New York: W.W. Norton, 1999.
Lua MLA (8ú heag.)Krugman, Paul R. The Return of Depression Economics. First edition. W.W. Norton, 1999.
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