Cita APA (7a ed.)

Wittgenstein, L., McGuinness, B. F., Nyberg, T., Wright, G. H. v., & Pears, D. (1996). Prototractatus: An early version of Tractatus logico-philosophicus (1st pub., repr.). Routledge.

Cita Chicago Style (17a ed.)

Wittgenstein, Ludwig, Brian F. McGuinness, T. Nyberg, G. H. von Wright, y David Pears. Prototractatus: An Early Version of Tractatus Logico-philosophicus. 1st pub., repr. London: Routledge, 1996.

Cita MLA (9a ed.)

Wittgenstein, Ludwig, et al. Prototractatus: An Early Version of Tractatus Logico-philosophicus. 1st pub., repr. Routledge, 1996.