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Cambridge: Cambridge University Press, 1995

Washington, DC: Accelerated Development, 1995

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London [u.a.]: Sage Publications, 1994

London: Fulton, 1992

London: Butterworth-Heinemann, 1994

London [u.a.]: Chapman & Hall, 1994

New York, NY [u.a.]: Auburn, 1992

Aldershot [u.a.]: Avebury, 1992

London [u.a.]: Bailliere Tindall, 1993

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Oxford [u.a.]: Pergamon Press, 1992

Newbury Park [u.a.]: Sage, 1994

Chichester [u.a.]: Wiley, 1994

London [u.a.]: Macmillan, 1993

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Cambridge [u.a.]: Cambridge University Press, 1993

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