International Council for Children's Play (ICCP). International Council for Children's Play (ICCP). Zentralsekretariat.
Čikaški stil citiranja (17. izdanje)International Council for Children's Play (ICCP). International Council for Children's Play (ICCP). Ulm: Zentralsekretariat.
MLA način citiranja (8. izdanje)International Council for Children's Play (ICCP). International Council for Children's Play (ICCP). Zentralsekretariat.
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