Monk, R. (1990). Ludwig Wittgenstein: The duty of genius (1st American ed.). Vintage.
Chicago Edition CitationMonk, Ray. Ludwig Wittgenstein: The Duty of Genius. 1st American ed. New York: Vintage, 1990.
Cita MLAMonk, Ray. Ludwig Wittgenstein: The Duty of Genius. 1st American ed. Vintage, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.