Widiatama, Yulizar, Aceng Abdul Hamid, and Martono Martono. 2018. “Business Environmental Analysis With Competitive Profile Matrix Method on Market Optimization in Real Estate Company (A Case Study at Tangerang Selatan Area)”. International Journal of Economics and Financial Issues 8 (4):222-26. https://econjournals.com./index.php/ijefi/article/view/6652.