@techreport{HarthPeter1989,
  author    = {Waltraud Harth-Peter},
  title     = {Generalversammlung der Association Montessori Internationale (AMI) vom 1. April 1989},
  institution = {Institut f{\"u}r P{\"a}dagogik (bis Sept. 2007)},
  year      = {1989},
}