New York, Oxford University Press 1981

New York , Oxford University Press , 1973

1982

Oxford University Press, New York/Toronto

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

London, New York, Toronto: Oxford University Press

London, New York, Toronto: Oxford University Press

New York; Oxford University Press, UNICEF; 1989

Clarendon Press u. New York, Oxford University Press 1984.

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

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

1973

London/New York, Jaye & Ward/Oxford University Press

Oxford University Press, New York 1978