Cita APA (7a ed.)
Russell, B. Our Knowledge of the External World: As a Field for Scientific Method in Philosophy. George Allen and Unwin.
Cita estilo Chicago (17a ed.)
Russell, Bertrand. Our Knowledge of the External World: As a Field for Scientific Method in Philosophy. Londres, Inglaterra: George Allen and Unwin.
Cita MLA (9a ed.)
Russell, Bertrand. Our Knowledge of the External World: As a Field for Scientific Method in Philosophy. George Allen and Unwin.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.