http://repository.uhamka.ac.id/id/eprint/15733/ 5._2019.02.19_Pradipta_2018_J._Phys.__Conf._Ser._948_012071.pdf Turnitin Trisna Roy Pradipta, TRP http://repository.uhamka.ac.id/id/eprint/15733/1/5._2019.02.19_Pradipta_2018_J._Phys.__Conf._Ser._948_012071.pdf.pdf Unduh!