Mustaqim Y, Purnomo M, Firmansyah NA, Ningrum NP. Outsourcing dalam Perspektif Ekonomi Syariah. proceeding [Internet]. 2021 Dec. 8 [cited 2025 May 1];:487-93. Available from: https://www.repository.urecol.org/index.php/proceeding/article/view/1713