1. Dr. Apri Heri Iswanto University of North Sumatera (USU) Medan
2. Mohammad Basyuni University of North Sumatera (USU) Medan
3. Irda Safni, S.P., M.Sc., P.hD. University of North Sumatera (USU) Medan
4. Arif Nuryawan, S.Hut., M.Si., Ph.D University of North Sumatera (USU) Medan
5. Rahmawaty, S.Hut.,Ph.D University of North Sumatera (USU) Medan