@incollection{KettschauPiorkowsky1999,
  author    = {I. Kettschau and M.-B. Piorkowsky},
  title     = {Vocational training in home economics and household science and occupations in the European member states of the International Federation for Home Economics (IFHE)},
  booktitle = {Deutsche Gesellschaft f{\"u}r Hauswirtschaft (Hrsg.)},
  year      = {1999},
}