Cita APA (7a ed.)

McGuinness, B. (2005). Young Ludwig: Wittgenstein's life, 1889-1921. Clarendon Press.

Cita Chicago Style (17a ed.)

McGuinness, Brian. Young Ludwig: Wittgenstein's Life, 1889-1921. Oxford: Clarendon Press, 2005.

Cita MLA (9a ed.)

McGuinness, Brian. Young Ludwig: Wittgenstein's Life, 1889-1921. Clarendon Press, 2005.