Inastiana F, Triayudi A, Handayani ETE. Implementation of the Waterfall Method for Designing Sisar (Archive Information System) at the National University: Implementation of the Waterfall Method for Designing Sisar (Archive Information System) at the National University. Mantik [Internet]. 2020May31 [cited 2026Sep.4];4(1):647-53. Available from: https://www.ejournal.iocscience.org/index.php/mantik/article/view/832