APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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