Russell, B. R. (1993). Our knowledge of the external world: As a field for scientific method in philosophy. Routledge.
Cita Chicago (17th ed.)Russell, Bertrand Russell. Our Knowledge of the External World: As a Field for Scientific Method in Philosophy. London: Routledge, 1993.
Cita MLA (9th ed.)Russell, Bertrand Russell. Our Knowledge of the External World: As a Field for Scientific Method in Philosophy. Routledge, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.