?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Safira&rft.au=Safira%2C+Dia&rft.aufirst=Dia&rft.title=Persepsi+Orang+tua+terhadap+Play+Group+di+Nagari+Kumango+Kecamatan+Sungai+Tarab+Kabupaten+Tanah+Datar&rft.degree=Bachelor%2FSkripsi&rft.inst=Universitas+Negeri+padang&rft.date=January+2017