Hermans, Willem Frederik
Wittgenstein
De Bezige Bij, 1992
 Buku Teks
Schneider, Hans Julius
Wittgenstein's later theory of meaning: imagination and calculation
Markono Print Media Pte Ltd, 2014
 Buku Teks
Travis, Charles
The used of sense: Wittgenstein's philosophy of language
Clarendon Press, 1989
 Buku Teks SO
Riko
Penolakan subjek menurut Ludwig Wittgenstein di dalam Philosophical Investigations = The refutation of subject on Ludwig Wittgenstein Philosophical Investigations
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2014
 UI - Tesis Membership
Vaske, Martin O.
An introduction to metaphysics
McGraw-Hill, 1963
 Buku Teks