RUBIANTO PITOYO. Organization & Methods yang Membedakan Efektivitas Manajemen Koperasi Simpan Pinjam Karya Berkah. Majalah Ilmiah UPI YPTK, [S. l.], v. 25, n. 1, p. 60–73, 2018. DOI: 10.35134/jmi.v25i1.34. Disponível em: https://jmi-upiyptk.org/ojs/index.php/jmi/article/view/34. Acesso em: 4 feb. 2026.