Bion, W. R., & Bion, F. (2005). Cogitations (New extended ed.). Karnac Books.
Lua i Stíl Chicago (17ú heag.)Bion, Wilfred R., agus Francesca Bion. Cogitations. New extended ed. London: Karnac Books, 2005.
Lua MLA (9ú heag.)Bion, Wilfred R., agus Francesca Bion. Cogitations. New extended ed. Karnac Books, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.