Cita APA (7a ed.)

Bion, W. R., & Bion, F. (1992). Cogitations. Karnac Books.

Cita Chicago Style (17a ed.)

Bion, Wilfred R., y Francesca Bion. Cogitations. London: Karnac Books, 1992.

Cita MLA (8a ed.)

Bion, Wilfred R., y Francesca Bion. Cogitations. Karnac Books, 1992.