?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Marietta&rft.aulast=K%C3%A9kes+Szab%C3%B3&rft.au=+K%C3%A9kes+Szab%C3%B3+Marietta&rft.title=Imitative+skills+and+the+developing+of+pretend+play+in+childhood&rft.date=2015&rft.genre=proceeding