Cita APA (7th ed.)

Black, M. (1964). A companion to Wittgenstein's tractatus. Cambridge University.

Cita Chicago (17th ed.)

Black, Max. A Companion to Wittgenstein's Tractatus. Londres: Cambridge University, 1964.

Cita MLA (9th ed.)

Black, Max. A Companion to Wittgenstein's Tractatus. Cambridge University, 1964.