Frege, G. (1979). Posthumous writings. Basil Blackwell.
Cita Chicago (17th ed.)Frege, Gottlob. Posthumous Writings. Basil Blackwell, 1979.
Cita MLA (9th ed.)Frege, Gottlob. Posthumous Writings. Basil Blackwell, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.