Anita Ratnasari, Vina Ayumi, Mariana Purba, Rudi Setiawan, and Wachyu Hari Haji, “A Multi-Method Usability Evaluation of a Higher Education Service Evaluation System: Integrating Cognitive Walkthrough, Unmoderated Remote Testing, and Heuristic Evaluation”, IJCISIM, vol. 18, no. 6s, pp. 110–123, Jul. 2026.