Cita APA (7a ed.)

Wittgenstein, L., Anscombe, G. E. M., & Wright, G. H. v. (1975). Zettel. Basil Blackwell.

Cita Chicago Style (17a ed.)

Wittgenstein, Ludwig, Gertrude Elisabeth Margaret Anscombe, y G. H. von Wright. Zettel. Oxford: Basil Blackwell, 1975.

Cita MLA (9a ed.)

Wittgenstein, Ludwig, et al. Zettel. Basil Blackwell, 1975.