Johnston, P. (1993). Wittgenstein: Re-thinking the inner. Routledge.
Lua i Stíl Chicago (17ú heag.)Johnston, Paul. Wittgenstein: Re-thinking the Inner. London ; New York: Routledge, 1993.
Lua MLA (9ú heag.)Johnston, Paul. Wittgenstein: Re-thinking the Inner. Routledge, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.