Cita APA (7a ed.)

Monk, R. (1971). Ludwig Wittgenstein: The Duty of Genius. The Free Press.

Cita Chicago Style (17a ed.)

Monk, Ray. Ludwig Wittgenstein: The Duty of Genius. New York: The Free Press, 1971.

Cita MLA (8a ed.)

Monk, Ray. Ludwig Wittgenstein: The Duty of Genius. The Free Press, 1971.