APA (7th ed.) Citation

Wittgenstein, L., & Wittgenstein, L. (1980). Das Blaue Buch. Suhrkamp.

Chicago Style (17th ed.) Citation

Wittgenstein, Ludwig, and Ludwig Wittgenstein. Das Blaue Buch. Frankfurt am Main: Suhrkamp, 1980.

MLA (9th ed.) Citation

Wittgenstein, Ludwig, and Ludwig Wittgenstein. Das Blaue Buch. Suhrkamp, 1980.

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