Nota de fuente |
Trabajando con clientes difíciles, 2015---port. (Richard Wessler)
WWW Psicoterapia Integrativa, 14-07-2016---(Richard Wessler; n. 11 September 1936, St. Louis, Missouri; currenlty emeritus professor of psychology and former chair of the department at Pace University in Westchester, New York (1974 to 2001), and has been in private practice in New York City (since 1986))
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