By Richard Bandler, John Grinder, John O'Stevens
By Jan Ehrenwald
By Lydia Kang, Nate Pedersen
By Steve Myers
By Leslie Cameron-Bandler, David Gordon
By G. C. Tympas (Greek Orthodox Church of St Cosmas and St Damian, London, UK)
By Adrian Wells (University of Manchester, UK)
By Richard Bryant-Jefferies (Retired BACP Accredited Person-Centred Counsellor and Supervisor, UK)
By Balint, Michael
By David A Seamands, David Seamands, Glenn Reynolds
By Anthony Stevens
By Louise Yolton Eberhardt
By Joe Griffin, Ivan Tyrrell
By Ian Stewart
By Philip Burnard, jo campling
By Ross Vasta, etc., Marshall Haith (University of Denver, Colorado, USA), Scott Miller (University of Florida
By Mukti Jain Campion
By John Sants, H.J. Butcher
By Tom Douglas
By C. Wright
By Steve Andreas, Connirae Andreas
By Antony Williams
By Averil Leimon, Francois Moscovici (White Water Strategies, London, UK), Helen Goodier (White Water Strategies
By Paula Crimmens
By L. S. Vygotsky, Michael Cole, Vera John-Steiner, Sylvia Scribner, Ellen Souberman
By Eric Rayner
By Jane Healy
By Julian Sleigh