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Castiello d'Antonio, A. (2013) Manfred Kets de Vries, Laura Guillén, Konstantin Korotov & Elizabeth Florent-Treacy, The Coaching Kaleidoscope. Insights from the Inside. New York: Palgrave Macmillan, 2010, pp. 261, £ 28.00 (hardback). Psicoterapia e Scienze Umane 47:137