Tichý, P. (1988). The foundations of Frege's logic. de Gruyter.
Cita Chicago (17th ed.)Tichý, Pavel. The Foundations of Frege's Logic. Berlin ; New York: de Gruyter, 1988.
Cita MLA (9th ed.)Tichý, Pavel. The Foundations of Frege's Logic. de Gruyter, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.