Refbacks
- There are currently no refbacks.
Elizar Elizar
Pascasarjana Universitas Muhammadiyah Sumatera Utara
Jalan Denai No. 217 Medan
Indonesia
Hasrudy Tanjung
Pascasarjana Universitas Muhammadiyah Sumatera Utara
Jalan Denai No. 217 Medan
Indonesia