Ed. Interéditions, Paris 1995. 522 pages.
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.
(2d. Ed. corrigée) Ed. Hermès, Paris 1991.