By Carl R. Rogers, H. Jerome Freiberg (both of University of Houston, Texas, USA)
By van den Brink-Budgen, Roy
By Mary Jane Drummond
By Pugh, Gillian
By Angela D. Nurse
By Stephen D. Krashen
By William James
By Don L Gates
By Nora Ellen Groce, John W. M. Whiting
By Stephen Machin, Anna Vignoles
By School Mathematics Project
By John Gray
By Taylor, John L., Walford, Rex
By Carolyn Weber
By Simon Winchester
By Margaret Donaldson
By Victoria Hurst
By Peter Worley, Thomas E. Wartenberg
By Graham Hitchcock, David Hughes
By Simon Cottle, Anders Hansen, RALPH NEGRINE, Chris Newbold
By Dr Seuss
By S J Louis Cardinal Billot, Fr O P Thomas Crean, Thomas Storck
By Glover, David, Glover, Penny
By Melissa S. Anderson (University of Minnesota, USA), Nicholas H. Steneck
By Alex Renton
By Goscinny, Uderzo
By James W Loewen
By Blake Jon, Chatterton Martin
By Peters, Richard.