HELFI, Helfi -. BANK GELAP DI KOTA BUKITTINGGI (RESISTENSI EKONOMI MASYARAKAT PERKOTAAN DALAM MENGHADAPI PEMODAL ETNIK LAIN). Islam Realitas: Journal of Islamic and Social Studies, [S. l.], v. 1, n. 2, p. 103–115, 2017. DOI: 10.30983/islam_realitas.v1i2.2. Disponível em: https://ejournal.uinbukittinggi.ac.id/index.php/Islam_realitas/article/view/2. Acesso em: 17 mar. 2026.