Hasibuan AA, Triayudi A, Sari RTK. Designing Information System Of Social Media Alumni National University Based On Website: Designing Information System Of Social Media Alumni National University Based On Website. Mantik [Internet]. 2020May31 [cited 2026Sep.2];4(1):701-8. Available from: https://www.ejournal.iocscience.org/index.php/mantik/article/view/796