Refbacks
- There are currently no refbacks.
Mhd Dandi Parliansyah
Universitas Muhammadiyah Sumatera Utara
Indonesia
Boy Arisandy
Universitas Muhammadiyah Sumatera Utara
Indonesia
Bintang Maha Poetra
Universitas Muhammadiyah Sumatera Utara
Indonesia