Editions Stock, 2015, ISBN 978-2-234-07765-2, 276 p.
Stock, 2014, ISBN 978-2- 234-07765-2
Editions Futuribles International, Paris, mai 1998. Etude n° 8. 88 pages.
Published by the Elmwood Institute, Berbeley, CA 94705. Edited by "Systems Education Research", Olympia, Wa 98502, first édition, winter 1990 104 pages.