APA (7th ed.) Citation

Monk, R. (1990). Ludwig Wittgenstein: The duty of genius. Free Press [etc.].

Chicago Style (17th ed.) Citation

Monk, Ray. Ludwig Wittgenstein: The Duty of Genius. New York [etc.]: Free Press [etc.], 1990.

MLA (9th ed.) Citation

Monk, Ray. Ludwig Wittgenstein: The Duty of Genius. Free Press [etc.], 1990.