Preis, A. (1950). "Welfare state" or socialism? New York: Pioneer.
Lua i Stíl Chicago (17ú heag.)Preis, Art. "Welfare State" or Socialism? New York: Pioneer, 1950.
Lua MLA (8ú heag.)Preis, Art. "Welfare State" or Socialism? New York: Pioneer, 1950.
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