?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Aprina&rft.aulast=Aprina&rft.au=Aprina%2C+Aprina&rft.title=Terapi+Bermain+Puzzle+pada+Anak+Usia+3-6+tahun+terhadap+Kecemasan+Pra+Operasi&rft.date=13+September+2019&rft.degree=Diploma&rft.inst=Poltekkes+Tanjungkarang