L'harmattan 2002 - ISBN : 2-7475-3308-5 ? 2002 ? 240 pages
1997, Paris, L'Harmattan, collection Alternance et développement.
Published by the Elmwood Institute, Berbeley, CA 94705. Edited by "Systems Education Research", Olympia, Wa 98502, first édition, winter 1990 104 pages.