Cita APA (7th ed.)

Anscombe, G. E. M., & Geach, P. T. (1961). Three philosophers. Blackwell.

Cita Chicago (17th ed.)

Anscombe, G E M., i Peter T. Geach. Three Philosophers. Oxford: Blackwell, 1961.

Cita MLA (9th ed.)

Anscombe, G E M., i Peter T. Geach. Three Philosophers. Blackwell, 1961.