Izdavač: Fontana, Collins, Glasgow 1978;

Izdavač: Macmillan and Company Limited, St. Martin's Press, London, New York 1968;

Izdavač: Routledge, Kegan Paul, London 1959; Rare Masterpieces of Philosophy and Science

Izdavač: Oxford University Press, London 1970;

Izdavač: Cambridge University Press, Cambrige 1969;

Izdavač: George Allen and Unwin Ltd, London 1964; Muirhead Library of Philosophy

Izdavač: George Allen and Unwin Ltd, Humanities Press Inc, London, New York 1970; Muirhead Library of Philosophy

Izdavač: George Allen and Unwin Ltd, Humanities Press Inc, London-New York 1966; Muirhead Library of Philosophy

Izdavač: Yale University Press 1973;

Izdavač: Fontana, Collins 1973;

Izdavač: Fontana, Collins 1976;

Izdavač: The Johns Hopkins University Press 1978;