Russell, B. (1920). Introduction to mathematical philosophy (2nd ed.). Allen & Unwin.
Cita Chicago (17th ed.)Russell, Bertrand. Introduction to Mathematical Philosophy. 2nd ed. London: Allen & Unwin, 1920.
Cita MLA (8th ed.)Russell, Bertrand. Introduction to Mathematical Philosophy. 2nd ed. Allen & Unwin, 1920.
Atenció: Aquestes cites poden no estar 100% correctes.