L'Harmattan, Paris, 2003, 252 p., ISBN 2-7475-2837-5.
Published by the Elmwood Institute, Berbeley, CA 94705. Edited by "Systems Education Research", Olympia, Wa 98502, first édition, winter 1990 104 pages.
Presses Polytechnique et Universitaires romandes (Lausanne -Suisse), 1990, 190 pages.