JAAFAR, Sara; A. HAMID, Isredza Rahmi. A Secured Clinic Booking System with Multi Factor Authentication. Applied Information Technology And Computer Science, [S. l.], v. 4, n. 2, p. 15–29, 2023. Disponível em: https://periodical.uthm.edu.my/index.php/aitcs/article/view/10045. Acesso em: 15 aug. 2026.