International Council for Children's Play (ICCP). International Council for Children's Play (ICCP). Zentralsekretariat.
Chicago-Zitierstil (17. Ausg.)International Council for Children's Play (ICCP). International Council for Children's Play (ICCP). Ulm: Zentralsekretariat.
MLA-Zitierstil (8. Ausg.)International Council for Children's Play (ICCP). International Council for Children's Play (ICCP). Zentralsekretariat.
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