1. M.Sc., Lecturer, Faculty of Economics and Business, Department of Accountancy, University of Riau
2. Dr., Lecturer, Department of Management, Faculty of Economics and Business, University of Riau
3. Dr., Lecturer, Department of Terumbu Karang Pasca Sarjana, University of Riau
4. Dr., Lecturer, Department of Accountancy, Faculty of Economics and Business, University of Riau