Reviewer

Prof. (Dr.) Hamid Saremi
Vice Chancellor of Islamic Azad University of Iran, Quchan Branch, Quchan-Iran

Dr. Moinuddin Sarker
Vice President of Research & Development, Head of Science Team, Natural State Research, Inc., 37 Brown House Road (2nd Floor) Stamford, USA.

Prof. Dr.Herman Mawengkang 
Department of Mathematics, Universitas Sumatera Utara, Indonesia

Dr. Rusydi Ananda, M.Pd
Department of Mathematics education, Universitas Islam Negeri Sumatera Utara, Indonesia

Prof. (Dr.) Nishakant Ojha
Principal Advisor (Information &Technology) His Excellency Ambassador Republic of Sudan& Head of Mission in New Delhi, India

Dr. E. Rusiadi, SE, MSi, CIQaR, CIQnR
Universitas Pembangunan Panca Budi, Indonesia

Dr. Xiaoguang Yue
Associate Professor, Department of Computer and Information, Southwest Forestry University, Kunming (Yunnan), China

Dr. Efron Manik, M.Si
Fakulty of Teacher Training and Education, Universitas Universitas HKBP Nommensen Sumatera Utara, Indonesia

Prof. Dr. Shahreen Kasim
Universitas Tun Hussein Onn Malaysia

Dr. Teguh Setiawan Wibowo, MM., M.Si., M.Farm., Apt.
Akademi Farmasi Yannas Husada Bangkalan