APA (7th ed.) Citation

Wittgenstein, L. (1964). Preliminary studies for the 'Philosophical investigations' generally known as The blue and brown books Wittgenstein..

Chicago Style (17th ed.) Citation

Wittgenstein, Ludwig. "Preliminary Studies for the 'Philosophical Investigations' Generally Known as The Blue and Brown Books." Wittgenstein. 1964.

MLA (8th ed.) Citation

Wittgenstein, Ludwig. "Preliminary Studies for the 'Philosophical Investigations' Generally Known as The Blue and Brown Books." Wittgenstein., 1964.

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