APA (7th ed.) Citation

Wittgenstein, L. (1965). The Blue and brown books: Preliminary studies for the philosophical investigations. Harper Torchbooks.

Chicago Style (17th ed.) Citation

Wittgenstein, Ludwig. The Blue and Brown Books: Preliminary Studies for the Philosophical Investigations. New York: Harper Torchbooks, 1965.

MLA (8th ed.) Citation

Wittgenstein, Ludwig. The Blue and Brown Books: Preliminary Studies for the Philosophical Investigations. Harper Torchbooks, 1965.

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