TY  - UNPB
PB  - Universitas Muhammadiyah Prof. Dr, Hamka
A1  - Erizal, Erizal
N1  - Unpublished
TI  - sk, dpna
ID  - repository47315
UR  - http://repository.uhamka.ac.id/id/eprint/47315/
AV  - public
ER  -