PRIYOSO, A. . PENERAPAN LAYANAN AMANAH PADA PERGANTIAN JARINGAN KABEL FIBER OPTIK PT. TELKOM AREA INJOKO SURABAYA. Ekosiana Jurnal Ekonomi Syari ah, [S. l.], v. 7, n. 1, p. 01–11, 2020. DOI: 10.47077/ekosiana.v7i1.21. Disponível em: https://journal.stainim.ac.id/index.php/ekosiana/article/view/21. Acesso em: 22 apr. 2026.