Izdavač: The Free Press, Collier Macmillan Publishers, London 1969;

Izdavač: Oxford University Press, London-New York-Toronto 1952; The Home Universiti Library of Modern Knowledge: knj. 74

Izdavač: Oxford at the Clarendon Press 1879; 2. izd.

Izdavač: Penguin Books Ltd. 1963;

Izdavač: Harper and Row 1970;

Izdavač: George Allen and Unwin Ltd, London 1958;

Izdavač: Hutchinson Educational 1968;

Izdavač: A Mentor Book, New York 1970; The New American Library

Izdavač: Methuen and Co Ltd, London 1968; A University Paperback

Izdavač: Vintage Books, New York 1961;

Izdavač: Philosophical Library, New York 1968;

Izdavač: Unwin Books, London 1967;