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

London-New York-Toronto, Oxford University Press-Sandpiper Books Ltd 1999

London: Humphrey Milford, Oxford University Press.

Oxford-London-New York-Toronto, Oxford University Press-Sandpaper Books Ltd 1999

Oxford-London-New York-Toronto, Oxford University Press-Sandpiper Books Ltd. 2001

1990

London, Guild Publishing / Oxford University Press

Tokyo-London-New York-Melbourne, Oxford University Press 1975