1. Faculty of Economic and Business, Universitas Muhammdiyah Sumatera Utara, Medan 20238, Indonesia
2. STEI Iqra Annisa, Pekanbaru 28291, Indonesia
3. Faculty of Economic and Business, Universitas Airlangga, Surabaya 60132, Indonesia
4. School of Business and Economics, Universiti Putra Malaysia, Serdang 4330, Malaysia
5. Faculty of Islamic Religion, Universitas Muhammdiyah Sumatera Utara, Medan 20238, Indonesia