APA (7th ed.) Citation

Wittgenstein, L., McGuiness, B., & Wright, G. v. (1995). Ludwig Wittgenstein: Cambridge letters. Blackwell.

Chicago Style (17th ed.) Citation

Wittgenstein, Ludwig, Brian McGuiness, and G.H. von Wright. Ludwig Wittgenstein: Cambridge Letters. Oxford, U.K: Blackwell, 1995.

MLA (9th ed.) Citation

Wittgenstein, Ludwig, et al. Ludwig Wittgenstein: Cambridge Letters. Blackwell, 1995.