Prof. Dr. R. Hamdani Harahap, M.Si, Universitas Sumatera Utara, Indonesia

Prof. Dr. Ir. Retna Astuti K.M.S, Universitas Medan Area, Indonesia

Prof. Dr. Muhammad Syukri Salleh, Universiti Sains Malaysia, Malaysia

Dr. Nor Arfan, Universitas Sains Malaysia, Malaysia

Dr. Mohammad Zaini Bin Abu Bakar, Universiti Sains Malaysia, Malaysia

Dr. Mohammad kamarul Yussof, Universiti Sains Malaysia, Malaysia