Cook, John W.
Wittgenstein's metaphysics
Cambridge University Press , 1994
 Buku Teks
Vincentia Irmayanti Meliono
Permainan-permainan bahasa menurut Wittgenstein
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1986
 UI - Skripsi (Membership)
Travis, Charles
The used of sense: Wittgenstein's philosophy of language
Clarendon Press, 1989
 Buku Teks
Schneider, Hans Julius
Wittgenstein's later theory of meaning: imagination and calculation
Markono Print Media Pte Ltd, 2014
 Buku Teks
Wittgenstein and the problem of other minds / edited by, Harold Morick
McGraw-Hill, 1967
 Buku Teks