Philosophical investigations

MLA

Wittgenstein, Ludwig. Philosophical Investigations. Oxford: Basil Blackwell, 1958.

APA

Wittgenstein, L. (1958). Philosophical investigations. Oxford: Basil Blackwell.

Chicago

Wittgenstein, Ludwig, and G.E.M Anscombe. Philosophical Investigations. Oxford: Basil Blackwell, 1958.