- Tractatus Logico-Philosophicus by Ludwig Wittgenstein, 2010-01-09
- Ludwig Wittgenstein: The Duty of Genius by Ray Monk, 1991-11-01
- Philosophical Investigations by Ludwig Wittgenstein, 2009-10-20
- Wittgenstein's Lectures on the Foundations of Mathematics, Cambridge, 1939 by Ludwig Wittgenstein, 1989-10-15
- Ludwig Wittgenstein: The Man and His Philosophy
- Logic and Sin in the Writings of Ludwig Wittgenstein by Philip R. Shields, 1998-02-28
- Wittgenstein: A Very Short Introduction (Very Short Introductions) by A. C. Grayling, 2001-07-28
- Philosophical Investigations (3rd Edition) by Ludwig Wittgenstein, 1973-03-11
- On Certainty by Ludwig Wittgenstein, 1991-01-15
- Notebooks, 1914-1916 by Ludwig Wittgenstein, 1984-01-15
- Wittgenstein's Vienna Revisited by Allan Janik, 2001-04-12
- Wittgenstein's Lectures, Cambridge, 1930-32 (Midway Reprint) by Ludwig Wittgenstein, 1989-06-15
- Letters from Ludwig Wittgenstein with A Memoir (English and German Edition) by Ludwig Wittgenstein, Paul Engelmann, 1974-03
- Tractatus Logico-Philosophicus by Ludwig Wittgenstein, 2009-10-04
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