Wittgenstein, L. (1994). Tractatus logico-philosophicus. Routledge.
Lua i Stíl Chicago (17ú heag.)Wittgenstein, Ludwig. Tractatus Logico-philosophicus. London: Routledge, 1994.
Lua MLA (9ú heag.)Wittgenstein, Ludwig. Tractatus Logico-philosophicus. Routledge, 1994.
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