Franklin

MLA

Bion, Wilfred R., and Francesca Bion. Cogitations. New extended ed. London: Karnac Books, 2005.

APA

Bion, W. R., & Bion, F. (2005). Cogitations. New extended ed. London: Karnac Books.

Chicago

Bion, Wilfred R., and Francesca Bion. Cogitations. New extended ed. London: Karnac Books, 2005.