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;

Izdavač: Clarendon Press, Oxford 1975;

Izdavač: Schocken Books 1980;

Izdavač: Routledge, London 1972;