Tarski, A. (1968). Undecidable theories. North-Holland.
Chicago Style (17th ed.) ZitazioaTarski, Alfred. Undecidable Theories. Amsterdam: North-Holland, 1968.
MLA (9th ed.) ZitazioaTarski, Alfred. Undecidable Theories. North-Holland, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.