The work „Modell Montessori. Grundsätze und aktuelle Geltung der Montessori-Pädagogik”, Freiburg: Herder (1. edition 1977) had to be published anew in January 2004 in the 13th edition, because the intended alterations could not be made with due brevity. The draft for the changed and expanded version of “Modell Montessori” for the 14th edition was sent to the publisher on 10-06-20004.
Prof. Hildegard Holtstiege, PhD
Holtstiege, Hildegard: Modell Montessori, 13. ed., Freiburg: Herder 2004