Arifuddin Muda Harahap, Mirza Nasution, and Calvin. “Legal Review of Outsourcing in Indonesia As a Form of Hidden Exploitation in Employment Relations”. ISNU Nine-Star Multidisciplinary Journal 2, no. 2 (September 29, 2025): 272–283. Accessed December 25, 2025. https://journal.isnu-sumut.org/index.php/ins9mj/article/view/816.