APA (7th ed.) Citation

Wittgenstein, L. (1969). On certainty. Blackwell.

Chicago Style (17th ed.) Citation

Wittgenstein, Ludwig. On Certainty. Oxford: Blackwell, 1969.

MLA (9th ed.) Citation

Wittgenstein, Ludwig. On Certainty. Blackwell, 1969.

Warning: These citations may not always be 100% accurate.