(1994). Wittgenstein's philosophy of mathematics. Routledge.
Chicago-čujuhus (17. p.)Wittgenstein's Philosophy of Mathematics. London: Routledge, 1994.
MLA-čujuhus (9. p.)Wittgenstein's Philosophy of Mathematics. Routledge, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.