1978

Oxford/London/New York : Oxford University Press

1976

Oxford/London/New York, Oxford University Press

London-Oxford-New York, Oxford University Press. 1970

London-Oxford-New York, Oxford University Press. 1961

London / Oxford New York, Oxford University Press

London, New York, Torono: Oxford University Press for the University of Hull

London, New York, Ibadan: Oxford University Press

London/New York/Toronto, Oxford University Press 1973

London, New York, Toronto: Oxford University Press

London, New York, Toronto: Oxford University Press

London/New York/Toronto, Oxford University Press 1972

London, New York, Toronto : Oxford University Press

London, New York, Toronto: Oxford University Press

London/New York/Toronto, Oxford University Press 1971

London, New York, Toronto: Oxford University Press