MASRUROH, Masruroh; FERNANDA, Ferry; WIBOWO, Tony. Analisis Efisiensi Biaya terhadap Keputusan Penggunaan Outsourcing Bidang Cleaning Service dan Catering pada PT Kuwera Jaya Jakarta. Journal The Winners, [S. l.], v. 15, n. 1, p. 34–46, 2014. DOI: 10.21512/tw.v15i1.634. Disponível em: https://journal.binus.ac.id/index.php/winners/article/view/634. Acesso em: 4 jul. 2025.