Authentication Score 3
Original Citation
Wittgenstein, Ludwig. Philosophische Untersuchungen [Philosophical Investigations]. Suhrkamp, 1953, pt. 1.
Current Citation
Wittgenstein, Ludwig. Philosophical Investigations, translated by G. E. M. Anscombe, et. al., edited by P. M. S. Hacker and Joachim Schulte. Wiley Blackwell, 2009, pt. 1.