AutoriJean Piaget3J. De Ajuriaguerra2Gilbert de Landsheere2James Robbins Kidd2Hubert Hannoun2Barbara M. Grant2A. M. Huberman2Robert M. Gagne2Emile Planchard2Gordon W. Allport2Kiss Arpad1Jean Drevillon1A. Ferriere1Dimitrie Gusti1Gaston Mialaret1Edith Ockel1A. Kiss1Georges Snyders1David P. Ausubel1Gilles Ferry1Dimitrie Todoran1Eberhard Fries1Ziemowit Wlodarski1Nazareno Padellaro1Ioan Cerghit1Viviane de Landsheere1A. V. Lunacearski1I. C. Petrescu1Lazar Vlasceanu1Iosif I. Gabrea1L. DHainaut1Ivan Furlan1Stanciu Stoian1Barbel Inhelder1Emil M. Brandza1Norman MacKenzie1Giorgio Gostini1Z. P. Dienes1Richard Delchet1Erich E. Geissler1Basil Bernstein1Wilbur Schramm1Roger Cousinet1Maurice Debesse1Ion Stanciu1Gaston Berger1Jean Hassenforder1G. G. Antonescu1Gilles Leroy1vezi mai mulţi autori