http://repository.uhamka.ac.id/id/eprint/10136/
Oktarina Dwi, Handayani
http://repository.uhamka.ac.id/id/eprint/10136/2/PKM%206B.pdf
http://repository.uhamka.ac.id/id/eprint/10136/
Oktarina Dwi, Handayani
http://repository.uhamka.ac.id/id/eprint/10136/2/PKM%206B.pdf