Παραπομπή APA

Russel, B. (1956). Logic and Knowledge, Essays 1901 - 1950. George Allen & Unwin.

Παραπομπή Chicago Style

Russel, Bertrand. Logic and Knowledge, Essays 1901 - 1950. London: George Allen & Unwin, 1956.

Παραπομπή MLA

Russel, Bertrand. Logic and Knowledge, Essays 1901 - 1950. George Allen & Unwin, 1956.