Cita APA (7a ed.)

Russell, B. R. (1996). Our knowledge of the external world: As a field for scientific method in philosophy. Routledge.

Cita Chicago Style (17a ed.)

Russell, Bertrand Russell. Our Knowledge of the External World: As a Field for Scientific Method in Philosophy. London: Routledge, 1996.

Cita MLA (9a ed.)

Russell, Bertrand Russell. Our Knowledge of the External World: As a Field for Scientific Method in Philosophy. Routledge, 1996.