PIPIN SETYO UTOMO; ZAIM MUKAFFI. Effort Of Improving The Quality Of Employee’s Performance : (Studi On Sosgul Malang). At-Tahdzib: Jurnal Studi Islam dan Muamalah, [S. l.], v. 8, n. 2, p. 114–130, 2020. Disponível em: https://ejournal.staiat-tahdzib.ac.id/index.php/tahdzib/article/view/119. Acesso em: 21 jul. 2026.