By World Health Organization(WHO)
By Warner, Richard, Girolamo, Giovanni De
By American Psychiatric Association
By Herbert, Martin
By Bray, Norman W.
By Carr, Alan
By Huizinga, Johan H.
By David Veale, Rob Willson
By Westbrook, David, Kennerley, Helen, Kirk, Joan
By Van Der Kolk, Bessel
By Streiner, David, Norman, Geoff
By Brisch, Karl Heinz, Kronenberg, Kenneth
By Jacobs, Michael
By Murdin, Lesley
By Cozolino, Louis
By Houston, Gaie
By Dave Mearns
By Bishop, Bernardine, Foster, Angela, Klein, Josephine, O'Connell, Victoria
By Dallos, Rudi
By Harari, Mr Philippe, Legge, Ms Karen
By Jenny, Firth-Cozens
By Jung, Emma
By Jamison, Kay Redfield, Redfield Jamison, Kay
By Marcel, A. J., Bisiach, E.
By Evans, Jonathan, Williams, Huw
By Kohn, Susan E.
By Marshall, John, Robertson, Ian
By Bures, Jan, Burešova, Olga, Krivanek, Jiri
By Franzen, Michael D., etc.