APA (7th ed.) Citation

Wittgenstein, L., & Anscombe, G. E. M. (1975). On certainty: = Über Gewissheit (1. publ. in paperback.). Blackwell.

Chicago Style (17th ed.) Citation

Wittgenstein, Ludwig, and G. E. M. Anscombe. On Certainty: = Über Gewissheit. 1. publ. in paperback. Oxford: Blackwell, 1975.

MLA (9th ed.) Citation

Wittgenstein, Ludwig, and G. E. M. Anscombe. On Certainty: = Über Gewissheit. 1. publ. in paperback. Blackwell, 1975.