Zaenudin, Z., B. I. F. Lubis, and L. D. Samsumar. “Design and Build a Web-Based Medical Record Information System Using Codeigniter and Bootstrap”. Jurnal Mantik, vol. 5, no. 3, Dec. 2021, pp. 2045-52, https://iocscience.org/ejournal/index.php/mantik/article/view/1832.