http://repository.uhamka.ac.id/id/eprint/10134/
Oktarina Dwi, Handayani
http://repository.uhamka.ac.id/id/eprint/10134/1/PKM%206A.pdf
Jurnal Ilmiah Fakultas Teknik
http://repository.uhamka.ac.id/id/eprint/10134/
Oktarina Dwi, Handayani
http://repository.uhamka.ac.id/id/eprint/10134/1/PKM%206A.pdf