TY  - UNPB
N1  - Unpublished
A1  - Maifitrianti, Maifitrianti
TI  - 4G
ID  - repository27080
AV  - public
UR  - http://repository.uhamka.ac.id/id/eprint/27080/
PB  - Universitas Muhammadiyah Prof. Dr. Hamka
ER  -