Tarski, A. (1968). Undecidable theories. North-Holland.
Chicago-čujuhus (17. p.)Tarski, Alfred. Undecidable Theories. Amsterdam: North-Holland, 1968.
MLA-čujuhus (9. p.)Tarski, Alfred. Undecidable Theories. North-Holland, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.