Editions Odile Jacob, 2012, ISBN 978 27381 2754 0 92 PAGES
Ed. Hazan, Paris, 1997, 543 pages.
Published by the Elmwood Institute, Berbeley, CA 94705. Edited by "Systems Education Research", Olympia, Wa 98502, first édition, winter 1990 104 pages.
Ed. L'Harmattan, 2001, , ISBN 2-7475-0259-7 , 236 pages.