London-Toronto, Routledge & K. Paul-University of Toronto Press. 1972

London-New York, Routledge-Kegan Paul 1987

London-New York, Routledge. 1988

London-New York, Routledge. 1990

London-New York, Routledge & Kegan Paul-Humanities Press. 1970

London ; New York : Routledge

London, New York: Routledge

London, New York: Routledge

London-New York, Routledge-Kegan Paul 1987

London / New York, Routledge

London, New York: , Routledge.

London, New York, Routledge

London, New York: Routledge & Kegan Paul

London-New York, Routledge. 1993

London - New York: Routledge 1992