Shauma Salsabiilla, Risqi’a, Adnan Oktar, Febri Rahmawati, and Muh Ikhsan Alif. S. “Investment Feasibility Analysis: A Case Study of Ciputra Group Property Company Using the Cost–Benefit Analysis Method”. SPECTA Journal of Technology 9, no. 3 (December 31, 2025): 229–237. Accessed January 8, 2026. https://journal.itk.ac.id/index.php/sjt/article/view/8481355.