Popper, K. (1952). The open society and its enemies. Routledge & Kegan Paul.
Lua i Stíl Chicago (17ú heag.)Popper, K.R. The Open Society and Its Enemies. London: Routledge & Kegan Paul, 1952.
Lua MLA (8ú heag.)Popper, K.R. The Open Society and Its Enemies. Routledge & Kegan Paul, 1952.
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