1. M.SA, Lecturer, Economic and Business Faculty, Accountancy Department, Universitas Riau
2. M.Ak, Lecturer, Economic and Business Faculty, Accountancy Department, Universitas Riau
3. M.Sc., Lecturer, Department of Accountancy, Faculty of Economics and Business, University of Riau
4. M.Sc., Lecturer, Faculty of Economics and Business, Department of Accountancy, University of Riau