1. Prof. Isfenti Sadalia
    Faculty of Economic and Business, Universitas Sumatera Utara, Indonesia
    (Scopus ID: 57192412199) (Sinta ID: 6023086)

  2. Prof. Khaira Amalia Fachrudin
    Faculty of Economic and Business, Universitas Sumatera Utara, Indonesia
    (Scopus ID: 57192830922) (Sinta ID: 5973292)

  3. Prof. Ali Abdulbaqi Ameen,
    Lincoln University College, Malaysia 
    (Scopus ID: 57203979857)

  4. Assoc. Prof. Qihui Chen
    College of Economics and Management, China Agricultural University, Beijing, China
    (Scopus ID : 56003888800)
  5.