Peningkatan Loyalitas Nasabah Koperasi Sunan Drajat Banjarwati Paciran Lamongan Jawa Timur melalui Prinsip-Prinsip dan Penerapan Nilai-Nilai Islami. Ummul Qura Jurnal Institut Pesantren Sunan Drajat (INSUD) Lamongan, [S. l.], v. 18, n. 1, p. 15–21, 2023. DOI: 10.55352/uq.v18i1.113. Disponível em: https://ejournal.unsuda.ac.id/index.php/UQ/article/view/113. Acesso em: 24 aug. 2026.