Sekar Arum, T. A., and L. . Abdurrahman. “Optimizing Information Technology Investment Using the Total Cost of Ownership (TCO) Approach: A Case Study of a Property Company”. Eduvest - Journal of Universal Studies, vol. 6, no. 6, June 2026, pp. 6630-41, doi:10.59188/eduvest.v6i6.52965.