1. Faculty of Economic Business, Perbanas Institute, Jakarta, 12940, INDONESIA
2. Faculty of Economic Business, Sekolah Tinggi Ilmu Ekonomi Indonesia Banking School, Jakarta, 12730, INDONESIA
3. Faculty of Economic Business, Universitas Pamulang, Tangerang Selaran, Banten, INDONESIA
4. Faculty of Economic Sciences, University of Warsaw, Warsaw, 00-241, POLAND