Basingstoke [u.a.]: Macmillan, 1995

Basingstoke [u.a.]: St. Martin's Pr., 1994

Harmondsworth, Middlesex: Penguin Books, 1979

Chicago [u.a.]: Univ. of Chicago Pr., 1976

London: Pan Books, 1977

London: Black, 1958

Basingstoke [u.a.]: St. Martin's Pr. [u.a.], 1996

Cambridge University Press (CUP), 1997

Appalachian State University, 1997

Longman Group Ltd., 1994

Longman Group Ltd., 1995

Oxford University Press (OUP), 1994

Oxford University Press (OUP), 1995

Cambridge University Press (CUP), 1993

Longman Group Ltd., 1992

Longman Group Ltd., 1993

Appalachian State University, 1993

Oxford University Press (OUP), 1992

Oxford University Press (OUP), 1993

Cambridge University Press (CUP), 1991