EDITIONS APOGEE, diffusion PUF, 2010, ISBN 978 284398 360 3, 159 pages
Ed. Fayard, Paris, 1996. 237 p.
Published by the Elmwood Institute, Berbeley, CA 94705. Edited by "Systems Education Research", Olympia, Wa 98502, first édition, winter 1990 104 pages.