Cita APA (7a ed.)

Bartley III, W. W. (1973). Wittgenstein. New York.

Cita Chicago Style (17a ed.)

Bartley III, William Warren. Wittgenstein. Philadelphia: New York, 1973.

Cita MLA (9a ed.)

Bartley III, William Warren. Wittgenstein. New York, 1973.