Wijaya, Lydia, Indra Kharisma Raharjana, and Endah Purwanti. “Strategic Management for IT Services on Outsourcing Security Company”. Journal of Information Systems Engineering and Business Intelligence 4, no. 1 (April 28, 2018): 46–56. Accessed November 27, 2024. https://e-journal.unair.ac.id/JISEBI/article/view/7709.