APA (7th ed.) Citation

Wittgenstein, L. (1972). Philosophical investigations (2. ed., repr. of Englisch text with index.). Blackwell.

Chicago Style (17th ed.) Citation

Wittgenstein, Ludwig. Philosophical Investigations. 2. ed., repr. of Englisch text with index. Oxford: Blackwell, 1972.

MLA (9th ed.) Citation

Wittgenstein, Ludwig. Philosophical Investigations. 2. ed., repr. of Englisch text with index. Blackwell, 1972.