Pears, D. (1985). Wittgenstein / David Pears ; Editor Frank Kermode. Fontana Press.
Lua i Stíl Chicago (17ú heag.)Pears, David. Wittgenstein / David Pears ; Editor Frank Kermode. Gran Bretaña: Fontana Press, 1985.
Lua MLA (9ú heag.)Pears, David. Wittgenstein / David Pears ; Editor Frank Kermode. Fontana Press, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.