Surya Darma Pardede, S.Pd., MM, Contact: 082294294705, Study Program of Economic Educational, Faculty of Teaching and Educational Sciences, University of HKBP Nommensen

Fernandez Silalahi, SE., Contact: 085289370555, email: fernandez.silalahi@uhn.ac.id, Staff of Public Relations, Secretariat of University, University of HKBP Nommensen